Julia Musto

US measles cases reached 2,295 in 2026, the highest level in 35 years, according to Johns Hopkins tracking data. Most confirmed infections occurred among unvaccinated or under-vaccinated people, with outbreaks affecting South Carolina, Utah, Texas and Virginia. A major South Carolina outbreak ended after increased vaccination, but health officials warn that low coverage in many communities leaves the country vulnerable to renewed spread and threatens its measles-elimination status.

A record 12,000 U.S. cyclosporiasis cases this year have been linked to contamination of produce and water with cyclospora, a parasite transmitted exclusively through human feces. Experts explain that contaminated irrigation water, improper hand hygiene among food handlers and cross-contamination during harvesting or processing are likely sources. The parasite becomes infectious only after spending weeks in the environment, allowing it to contaminate foods such as leafy greens and berries that are typically consumed raw. Washing produce reduces but does not eliminate risk, and only cooking at high temperatures can kill the parasite. Investigations into contaminated crops, including lettuce in the Great Lakes and Midwest regions, remain ongoing.

Confirmed cyclosporiasis infections in the United States have surged to 4,173 across 41 states, with thousands more unconfirmed, far exceeding typical annual totals. Michigan reported the highest number of cases, largely connected to contaminated lettuce. Symptoms, while not life‑threatening, are severe and include vomiting, fever and dehydration. Federal officials report that the outbreak source has been identified, prompting a voluntary recall of iceberg lettuce grown in central Mexico, though the nationwide source remains under investigation.

NASA will fly ER-2 and WB-57 aircraft into wildfire‑generated pyrocumulonimbus clouds to gather real‑time data and improve forecasting of dangerous fire‑driven storms. The INSPYRE project, led by the Naval Research Laboratory, aims to better understand storm formation as climate change fuels more severe fires. Multiple missions over the western United States and Canada will deploy airborne and ground‑based sensors as wildfires intensify across North America.

US health officials identified Taylor Farms lettuce as the potential source of a nationwide cyclosporiasis outbreak, prompting a voluntary recall while investigations continue. Robert F. Kennedy Jr., the health secretary, said the outbreak is under control despite rising case numbers, citing extensive epidemiological forensics. The FDA clarified that a false-positive test result does not alter the evidence supporting the recall, while CDC leaders said recent FoodNet program cuts did not affect monitoring of the parasite. More than 10,000 cases have been reported across over 40 states, with Michigan experiencing the highest number.

Measles cases in the United States have reached 2,260 across 44 states and the District of Columbia, nearing last year’s record total of 2,289 cases. Most infections occur among unvaccinated children and teenagers, and several large outbreaks persist, including major clusters in South Carolina, Utah and Texas. Health officials warn transmission continues, with vaccination rates in key states falling below the 95 percent threshold needed for herd immunity. The increase raises the possibility that the U.S. could lose its measles elimination status, with a review set for November.

Experts report that consuming up to five cups of black coffee daily is generally safe and may reduce risks of stroke, heart failure and heart disease, though individual responses vary. The American Heart Association cautions that exceeding 400 milligrams of caffeine can cause health issues, and highly concentrated energy products may heighten cardiovascular risks. The FDA notes that some people experience adverse symptoms at lower amounts, while toxic effects may occur at very high doses. Most Americans consume caffeine within recommended limits.

Researchers identified the Chicxulub impactor that ended the age of dinosaurs as a rare carbonaceous chondrite, based on trace elements found in clay formed by the impact. The findings suggest sulfur in the meteorite was unlikely to have caused mass extinction, pointing instead to fine debris thrown into the atmosphere. The research involved scientists from the University of British Columbia and European institutions and aligns with ongoing debates about the roles of climate change and volcanic activity in the extinction event.

A 14‑foot, 1,700‑pound great white shark named Contender was detected near North Carolina’s Outer Banks as it migrates north along the Atlantic coast. Tagged in 2025 by OCEARCH, Contender has traveled more than 7,000 miles between Florida and Canada. Researchers expect his tracking tag to provide five years of real‑time data on mature male white shark behavior. The species typically moves toward cooler northern waters in summer to feed on seals and large fish, with previous pings placing Contender near Long Island. Though large, Contender is smaller than Deep Blue, the largest known great white shark measuring about 20 feet.

Rising U.S. cases of cyclosporiasis have prompted experts to stress thorough produce washing, as the parasite spreads through contaminated fruits and vegetables. Health agencies recommend scrubbing firm produce, rubbing softer items under running water, and separating leafy greens while washing, noting that prewashed foods are not always safe. Cleaning agents such as soap, bleach, vinegar, and commercial washes are ineffective against the parasite’s protective layer. Combining proper washing with cooking or peeling offers the strongest protection against infection.

Experts warn of rising cyclosporiasis infections in the U.S., with some cases linked to contaminated lettuce. While no produce is fully safe from the parasite, fruits with thick peels such as bananas, kiwis, avocados and potatoes may reduce risk when properly washed and peeled. Health officials emphasize thorough washing and heating food to 158 degrees Fahrenheit as the most effective prevention methods.

An outbreak of Legionnaires’ disease on New York City’s Upper East Side has sickened 63 people and prompted orders for 76 buildings, including the Metropolitan Museum of Art and the Guggenheim Museum, to clean their cooling towers. Health officials are working to identify the source, though testing cannot determine whether detected bacteria are alive. New diagnoses have slowed, and no deaths have occurred, with most patients discharged. The disease, caused by Legionella bacteria thriving in contaminated water systems, poses higher risk to older adults and those with certain medical conditions. Early antibiotic treatment is effective, though the illness remains fatal in about 10 percent of cases nationally.

A long-term study of 480,000 adults found that individuals with both excess body fat and poor muscle health are 3.5 times more likely to develop type 2 diabetes. Those with combined obesity and muscle loss showed significantly higher risk than people with only one of the conditions, with nearly 15 percent developing the disease within a decade. Women and adults under 60 were disproportionately affected. Researchers from Curtin University concluded that monitoring muscle health alongside body weight could improve early identification of high‑risk individuals and strengthen diabetes‑prevention strategies.

Cyclosporiasis cases have surged across 40 U.S. states, with Michigan reporting the highest numbers and more than 5,500 cases nationwide. The illness, caused by the cyclospora parasite, is linked to contaminated produce, though investigators have not confirmed a source. Officials are examining multiple fresh foods, and Taco Bell is under scrutiny but not formally tied to the outbreak. CDC data shows significantly higher case counts than last year, with hospitalizations but no deaths. Health authorities advise thorough cleaning or cooking of produce to reduce risk, and doctors note that symptoms may take days to appear but are treatable with antibiotics.

Scientists warn that human-driven environmental pressures could trigger a sixth mass extinction, but conserving habitats for primates and other umbrella species may help protect entire ecosystems. Research from Yunnan, China, shows that preserving large habitats for species such as gibbons and snub-nosed monkeys also safeguards numerous other organisms, similar to successful panda conservation efforts. Challenges include migratory species and rapid biodiversity loss, though early signs of adaptation and local actions like pollinator gardens offer some hope. Genetic diversity and strategic habitat protection remain key tools in slowing species decline.

A rapidly growing outbreak of the parasite cyclospora is causing hundreds of cyclosporiasis cases across the United States, with Michigan experiencing the largest surge and Ohio and North Carolina also reporting significant numbers. Health departments and the CDC have not yet identified a common source, though past outbreaks have been linked to contaminated produce. Symptoms can last more than a month, and treatment requires sulfa-based antibiotics. Authorities are investigating multiple clusters, with at least 20 hospitalizations reported but no deaths. Public health officials urge proper food cleaning and awareness of symptoms.

Florida’s annual Burmese python challenge sends hundreds of participants into the Everglades to capture and humanely kill the invasive species, with top prizes reaching $10,000. Nearly 1,000 competitors removed a record 294 pythons the prior year, and strict rules govern the use of tools and humane killing procedures. Burmese pythons, present since the 1970s, threaten native wildlife, and more than 27,000 have been removed in the past 26 years. Wildlife officials emphasize that removal is essential for protecting native species.

Experts warn that nearly all Americans have at least one risk factor for cardiovascular-kidney-metabolic syndrome, a cluster of related conditions including obesity, heart disease, kidney disease and Type 2 diabetes. The American Heart Association recommends earlier screening, emphasizing excess body fat as a primary driver of these illnesses. Researchers highlight that earlier detection, particularly for kidney disease, could improve life expectancy and reduce progression to severe disease. Maintaining a healthy weight, regular screenings, managing cholesterol and blood pressure, sufficient sleep and avoiding tobacco are recommended to reduce risks.

NASA’s New Horizons spacecraft has awakened from a 321‑day hibernation in deep space and is in good health. Mission teams will begin downlinking stored data, followed by retrieving measurements from its three science instruments. In the coming weeks, the spacecraft’s ultraviolet spectrograph and other sensors will resume observing the outer heliosphere. Ground teams are upgrading supporting software to improve long‑term operations. Launched in 2006, New Horizons previously completed close‑up studies of Pluto and the Kuiper Belt object Arrokoth and continues to gather data as it travels through the outer solar system.

A contagious cancer affecting soft-shell clams has spread through Washington’s Puget Sound, impacting up to three‑quarters of the population in parts of the region. The disease, previously seen on the East Coast, poses no direct human health risk but threatens ecosystems already stressed by pollution and climate‑driven heat and acidification. Scientists believe accidental human transport is the most likely explanation for its arrival. Oregon officials warn the illness could spread south, though current risk remains low. Researchers view the early-stage outbreak as an opportunity to study how wild clams respond and emphasize that preventing marine pollution and checking ships for attached shellfish may help limit further spread.

Research from the University of Chicago tracking weight-loss drug users over more than two years found little long-term evidence that the medications improve mental health, relationships, or employment despite widespread claims of emotional benefits. Survey data from thousands of diabetes patients suggested that perceived improvements fade over time, though researchers note that subtle well‑being changes may be harder to measure. Findings contrast with another study linking GLP‑1 drugs to better dating and job prospects for some women. Usage of weight‑loss drugs has surged nationwide, while users continue to report increased confidence despite known side effects and ongoing uncertainty about long‑term outcomes.

Cancer is identified as the leading cause of dog deaths, with poor diet, obesity, and lack of exercise significantly increasing risk. Experts emphasize that feeding dogs nutritious, appropriately portioned meals, maintaining regular exercise, and scheduling routine veterinary checkups can extend lifespan by up to 30 percent. Dental health, mental wellbeing, and minimizing exposure to environmental pollutants are also highlighted as crucial factors. Large-scale studies such as the Dog Aging Project continue to explore genetic and environmental influences on canine aging, with researchers noting that accelerated dog lifespans may help identify risk factors relevant to humans.

Global cancer cases are projected to reach 35 million by 2050, with the World Health Organization warning that advances in treatment are being undercut by rising healthcare costs and widening inequities. The United States faces high financial burdens despite better access to care, with many patients experiencing catastrophic expenses. Aging populations, limited rural access to screening, and preventable risk factors such as tobacco use and poor diet contribute to increasing case numbers. WHO argues that government-led prevention and control efforts would yield significant economic and social returns.

At least 1,000 cyclosporiasis cases linked to the cyclospora parasite have been reported across 17 US states, with Michigan experiencing an unprecedented surge. Officials suspect contaminated produce but continue to investigate the source. Symptoms include prolonged diarrhea, cramping and fatigue. Health agencies advise cooking produce when possible, thoroughly washing fruits and vegetables, removing bruised areas, refrigerating cut items and avoiding untreated water. No deaths have been reported.

A rapidly spreading cyclospora parasite has caused hundreds of cases of cyclosporiasis across multiple U.S. states, with Michigan reporting the largest surge. The illness, linked to contaminated produce or water, causes severe gastrointestinal symptoms but is rarely life‑threatening. At least 20 hospitalizations and 145 confirmed cases have been recorded by the CDC as health officials investigate several clusters nationwide.

A rapidly increasing number of cyclosporiasis infections, caused by the parasite Cyclospora, is affecting several U.S. states, with Michigan recording more than 700 cases. Ohio and North Carolina have also reported significant numbers. Health officials have not identified a source, though past outbreaks were linked to contaminated produce. Symptoms can last weeks without treatment, and sulfa antibiotics are recommended. The CDC reports no deaths, around 20 hospitalizations, and ongoing investigations into multiple clusters, advising proper cleaning and cooking of food to reduce risk.

Research from Columbia University shows that reducing nightly sleep by 90 minutes for six weeks increases sedentary time and leads to measurable weight gain, particularly among men and postmenopausal women. Participants who experienced sleep restriction showed elevated inactivity even after accounting for added waking hours, adding to risks for obesity-related conditions such as type 2 diabetes and heart disease. Prior studies on the same group found sleep loss increased insulin resistance and inflammatory markers. Experts emphasize that chronic insufficient sleep affects a third of U.S. adults and carries broader health risks, underscoring the need to understand how improving sleep might mitigate these outcomes.

Experts describe how consistent sleep supports digestive regularity by maintaining circadian rhythm alignment and healthy gut microbiome function. Sleep disruption can affect bowel activity, impair serotonin and melatonin production, and increase the likelihood of constipation. Maintaining a stable sleep routine, managing stress, staying hydrated, eating fermented foods, and avoiding heavy meals before bedtime can help support digestion and prevent prolonged constipation.

Obesity rates among American adults and youth have risen sharply over more than two decades, with overall prevalence increasing from 30 to 41 percent and abdominal obesity reaching 61 percent. Severe obesity and youth abdominal obesity saw especially large increases. Experts link the trends to ultraprocessed diets, sedentary lifestyles, poor mental health, inadequate sleep and social determinants of health, while noting that genetics also contribute. Although weight-loss drugs such as GLP-1 medications may help, affordability has been a barrier, partly addressed by a new Medicare pilot program. Researchers emphasize that understanding population-level trends is essential for targeting prevention efforts and reducing the long-term health burden tied to obesity.

A study from Columbia University found that reducing sleep by about 90 minutes per night for six weeks leads to increased sedentary behavior and roughly one pound of weight gain, with greater effects in men and postmenopausal women. Researchers observed changes in inactivity, insulin resistance, inflammation, and appetite‑related hormones, reinforcing links between insufficient sleep and higher risks of obesity, diabetes, and heart disease. Health experts emphasize the need for adequate sleep and further research on the benefits of improving sleep in chronically sleep‑deprived adults.

NASA is preparing an experiment called Flammability of Materials on the Moon to study how fire behaves in lunar gravity in order to improve safety for future Artemis crews. A robotic combustion chamber will carry materials such as cotton, fiberglass and acrylic rods to the lunar surface, where sensors and cameras will monitor flame behavior and oxygen levels. The mission may launch later this year.

A surge in cyclosporiasis infections caused by the Cyclospora parasite is affecting multiple U.S. states, with Michigan reporting the highest increase in cases. Ohio, North Carolina and other states have also recorded significant numbers as health departments and the CDC investigate several clusters with no confirmed common source. Symptoms include prolonged watery diarrhea and dehydration, particularly affecting older adults and those with weakened immune systems. Treatment involves sulfa-based antibiotics, and authorities recommend proper food cleaning and cooking to reduce risk.

NASA plans a controlled fire experiment on the lunar surface to study how materials burn under lunar gravity as part of preparation for future Artemis crewed missions. The FM2 experiment will use a sealed combustion chamber with cotton, fiberglass and acrylic samples to gather data on flame behavior, spread rates and material flammability. Differences between Earth, lunar and microgravity flames make direct testing necessary, and findings are expected to improve spacecraft fire safety standards. The mission could launch later this year.

Clinical pharmacist Sue Ojageer outlines essential items for a personalized travel medical kit, recommending antihistamines, antiseptics, pain relievers, sunscreen and hydration products for adults, with additional items such as compression socks for seniors and fever reducers and electrolyte solutions for children. Packing should reflect planned activities and destination-specific risks, including blister pads for hiking, water purification options for remote areas and antidiarrheal medication for unfamiliar foods. She emphasizes bringing extra prescription medications, preparing for delays and carrying medical documentation to avoid complications while traveling.

A clinical pharmacist outlines essential items for a personalized travel medicine bag, recommending antihistamines, first aid supplies, pain relievers, sanitizer, sunscreen, and insect repellent for adults. Seniors may need compression socks and device accessories, while infants and children require products like children’s Tylenol and electrolyte solutions. Packing should reflect destination and activities, with extras such as blister pads, water purification tools, antidiarrheal medication, or antibiotics for international travel. Travelers are advised to pack extra prescription medications and maintain backup plans, including travel insurance and documentation of prescriptions.

Hundreds of thousands of male mosquitoes infected with Wolbachia bacteria are being released across Washington, D.C. to suppress populations of invasive Asian Tiger mosquitoes that can spread multiple diseases. The sterile males, deployed by Bee Safe Mosquito Control using stock from MosquitoMate, render female mosquitoes infertile after mating. Similar biocontrol efforts have been used internationally and are expanding in the US with projects backed by Alphabet. Releases will continue through September, with long‑term population reduction expected.

Rising temperatures in the United States are increasing risks to heart health as heat forces the cardiovascular system to work harder to regulate body temperature. Experts warn that climate change is worsening heat-related illness and mortality, with deaths already surging over recent decades. People with and without heart disease are urged to stay cool, limit outdoor activity during peak heat, stay hydrated, dress appropriately, and watch for symptoms of heat illness that may require medical attention.

Roughly 600,000 non‑biting male mosquitoes infected with Wolbachia bacteria are being released across the Washington, D.C. area to suppress populations of invasive, disease‑carrying species such as the Asian Tiger mosquito. The sterilizing effect of the bacteria prevents eggs from hatching, reducing risks of West Nile virus, dengue, chikungunya and Zika. Run by Bee Safe Mosquito Control, the program is considered safe for humans, will continue through September, and is expected to expand in 2026 to support long‑term mosquito reduction.

West Nile virus cases in the United States have reached their highest early-year level in more than two decades, with 48 infections reported, including 38 severe neuroinvasive cases. The CDC attributes the surge to unusually early virus circulation across 23 states, with Arizona accounting for most cases. Rising temperatures linked to climate change are contributing to favorable mosquito conditions. Officials warn that infections can lead to severe neurological complications, though most infected people experience mild or no symptoms. With millions expected outdoors over the July 4 weekend, the CDC urges preventive measures such as EPA-registered insect repellent, protective clothing, and avoiding outdoor exposure from dusk to dawn when mosquitoes are most active.

A large observational study of 355,000 adults links higher coffee consumption to reduced risks of cirrhosis, liver cancer, and liver‑related death, with benefits seen from both caffeinated and decaffeinated varieties. Coffee drinkers showed biological markers associated with healthier liver function, though researchers caution that the study does not prove causation and advise maintaining healthy weight, moderating alcohol intake, and exercising rather than increasing coffee consumption solely for liver protection.

A large Cedars-Sinai study of 355,000 U.K. adults found that drinking coffee, caffeinated or decaffeinated, is associated with lower risks of liver cancer, cirrhosis and liver-related death, with the strongest benefits at three to four cups per day. Researchers observed improved liver-related biomarkers among coffee drinkers and aim to identify the specific compounds responsible. They caution that the study is observational, coffee is not suitable for everyone and standard liver disease prevention measures remain essential as U.S. liver cancer rates continue to rise.

The FDA authorized 20 ZYN nicotine pouch products to be marketed as posing lower health risks than cigarettes after a scientific review. The decision allows modified-risk claims highlighting reduced risks of cancers, heart disease and respiratory illnesses compared with smoking. Health organizations, including the American Lung Association, criticized the ruling, warning that nicotine remains harmful and poses risks to young people. The FDA emphasized that youth should not use nicotine products and noted that youth use of pouches remains low. The agency stated it may withdraw the authorization if youth uptake rises. The orders expire in five years.

Federal data show a sharp rise in Candida auris cases in the United States, increasing from 2,882 in 2022 to 6,197 in 2024. The fungus is increasingly resistant to antifungal medications, poses severe health risks to vulnerable patients, and can persist on surfaces for weeks. Both infected and colonized patients can spread the yeast, and colonization may last for years without treatment. The CDC urges strict infection‑control measures, including isolation, specialized cleaning, protective equipment, and screening to identify asymptomatic carriers. Improved testing and effects from the Covid‑19 pandemic may be contributing to the rise.

Medicare enrollees can access certain GLP-1 weight loss drugs for a $50 monthly fee through the temporary Medicare GLP-1 Bridge program running through 2027. Coverage includes Wegovy in pill or injection form and specific Zepbound and Foundayo formulations, excluding single‑dose Zepbound products. Eligibility applies to Medicare Part D participants at health risk due to obesity, prediabetes, or heart issues, excluding those with existing GLP‑1 coverage. Prescriptions require prior authorization and confirmation that treatment supports a lifestyle plan. Long‑term continuation of access after 2027 remains uncertain.

An analysis of 190 million nights of sleep and a survey of over 1,000 adults found that about 70 percent of Americans struggle to stay asleep, often due to racing thoughts, discomfort, noise or temperature. Over a quarter experience disruptions regularly, and most wake one or two times nightly. Daylight Saving Time was identified as a key period of poor sleep, while seasonal differences had little effect. Many adults worry about the health consequences of insufficient rest, which increases risks for chronic illness, accidents and reduced focus. Researchers suggest that combining lived experience with sleep-tracking technology could offer deeper insights into nationwide sleep issues.

A large heat dome is expected to expose roughly 250 million people in central and eastern regions of the United States to dangerous temperatures exceeding 100 degrees Fahrenheit over the July 4 weekend. The system is driven by a persistent high‑pressure pattern that traps heat and prevents cloud formation, conditions made significantly more likely by human‑driven climate change and an intensifying El Niño. Heat domes pose serious risks including increased mortality, heavy strain on infrastructure, drought‑driven wildfires and potential power outages, with recent events worldwide causing substantial human and environmental harm.

Sunburns significantly increase the risk of melanoma and other skin cancers, with five or more burns able to double melanoma risk. Severe or blistering burns, especially during childhood or adolescence, are linked to higher rates of squamous cell carcinoma and an 80 percent increase in melanoma risk. Experts stress that prevention is essential, recommending protective clothing, UV‑blocking accessories, and regular, generous sunscreen application. Over 88 million U.S. adults experience sunburn annually, underscoring the importance of proactive sun protection.

A prolonged and dangerous heat dome is forecast to blanket large areas of the United States through early July, exposing around 250 million people to extreme temperatures and humidity. Experts warn that heat domes linger longer than ordinary heat waves and are becoming more frequent and intense due to human‑driven climate change. The phenomenon raises risks of deaths, infrastructure strain, drought, wildfires, and pressure on water and power systems. Scientists link worsening conditions to a warming atmosphere and an intensifying El Niño pattern, which together amplify hazardous heat events globally.

A widespread heat wave driven by a persistent heat dome is expected to bring dangerous temperatures and humidity to large portions of the United States through the Fourth of July weekend. With air conditioning costly and vulnerable to power grid strain, experts suggest low-cost cooling methods including evaporative cooling with wet towels, using window shades, taking lukewarm rather than cold baths, sleeping closer to the floor, and using fans only when temperatures are below 90 degrees and humidity is low. Health agencies warn that fans can worsen heat exposure in extreme conditions due to heat transfer from hot air and limited sweat evaporation.

Record high summer temperatures in the United States increase the risk of heat-related illness and worsen conditions including heart disease, kidney disease, gout, and migraines. Experts warn that heat forces the heart to work harder, dehydration raises the likelihood of kidney stones and joint inflammation, and high temperatures may weaken immune responses. Millions with arthritis or migraines may experience heightened symptoms during heat waves, underscoring the importance of hydration and caution for vulnerable groups.

Medicare will begin covering select GLP-1 weight-loss drugs under a temporary pilot program allowing eligible Part D enrollees at medical risk from obesity to obtain medications such as Zepbound, Wegovy and Foundayo for a flat monthly cost of $50. The initiative, authorized as a federal demonstration project, runs through 2027 and requires provider certification and prior authorization. Current legal restrictions prevent Medicare from permanently covering these treatments, raising concerns that patients may lose access and experience negative health impacts once the pilot ends.

A large-scale genetic analysis of 1.6 million tropical insects suggests the global number of insect species may range from 14 to 20 million, far exceeding prior estimates of about six million. Using species ratios derived from parasitoid wasps in Costa Rica and comparative biodiversity measures across other taxa, researchers projected the expanded estimate. The findings underscore the urgency of cataloging insect diversity as climate change, habitat loss and other human pressures drive global declines, with up to 40 percent of insect populations in retreat and few species formally assessed for extinction risk.

Dangerous heat driven by a persistent heat dome is expected to affect much of the United States through the Fourth of July, prompting warnings for millions to stay hydrated and cool. Recommended at‑home cooling methods include using cold compresses, keeping curtains closed to block sunlight, opting for lukewarm rather than cold showers, and sleeping lower to the ground. Fans may offer limited relief but can become ineffective in extreme heat or high humidity, underscoring the need for careful heat‑safety practices.

A temporary federal pilot program will allow Medicare to cover certain GLP-1 weight-loss drugs, reducing participant costs to $50 per month for medications including Wegovy, Zepbound, and Foundayo. Eligibility applies to enrollees in Part D plans whose health is at risk due to obesity, with exclusions for those already receiving coverage for GLP-1 drugs or certain existing conditions. Prescriptions require prior authorization and participation in a lifestyle program focused on diet and exercise. Coverage runs through 2027, and uncertainty remains about long-term access once the pilot ends.

Senior members of the Trump-aligned administration have adopted a fermented‑food-heavy diet promoted by Health Secretary Robert F. Kennedy Jr., who credits it with rapid weight loss and other health improvements. Nutrition experts acknowledge benefits of fermented foods but caution that they should supplement a balanced diet, noting sodium content, possible digestive effects and risks for people with certain conditions. They emphasize that overall lifestyle, fiber intake and calorie balance drive weight loss more than any single food. Members of the administration reportedly incorporate sauerkraut and similar foods into their meals as Kennedy advances new dietary guidelines elevating meat and fermented foods.

A prolonged heat wave driven by a persistent heat dome is expected to threaten large parts of the United States through the Fourth of July, with the National Weather Service warning of health risks across several regions. Tips for staying cool without relying heavily on air conditioning include using cold compresses, blocking sunlight with curtains and shades, taking lukewarm rather than cold baths, sleeping closer to the floor and using fans cautiously, as they may worsen heat exposure in extreme temperatures or high humidity.

A diet trend centered on fermented foods such as sauerkraut and kimchi has gained attention among senior US officials, including Robert F. Kennedy Jr. and JD Vance, with claims of weight loss and improved health. Dietitians agree these foods offer probiotic benefits for gut and overall health but stress they are not effective as standalone weight‑loss methods and may pose risks due to high sodium levels. Experts advise moderate consumption and incorporating fermented foods into a balanced diet rather than relying on extreme dietary approaches.

A new aviation testing facility is being built at the Mike Monroney Aeronautical Center in Oklahoma City to support emerging technologies such as eVTOL aircraft and air taxis. The V-PAR range will help the FAA integrate advanced air mobility into national airspace and is scheduled for completion in 2027, with potential future expansion. The initiative aligns with the Department of Transportation’s national strategy for advanced air mobility and follows a Trump administration executive order promoting drone development. Nationwide pilot programs, NASA research and industry studies continue to shape the future of autonomous and electric aircraft operations across the US.

Lake Powell has reached its lowest summer water level on record due to climate‑driven drought and reduced snowpack feeding the Colorado River. The decline threatens water supplies, hydropower generation from Glen Canyon Dam, and regional tourism. Long‑term drought has reduced Colorado River storage to about 36 percent of capacity, with forecasts indicating further decline. States reliant on the river face mounting pressure to negotiate a new water‑sharing agreement before existing guidelines expire, with experts warning of potentially severe cuts if no deal is reached.

A study from the American Psychological Association shows younger generations in the U.S., especially Millennials, report greater fears about becoming adults compared with Gen X and Baby Boomers. These maturity fears tend to decrease with age, though the decline is weaker among Baby Boomer men. Researchers link the higher fear levels in younger cohorts to economic uncertainty, social pressures, and concerns about the future. While financial outcomes for Millennials and Gen Z show mixed indicators, many still experience money-related stress. Researchers plan further work to understand what drives rising apprehension about adulthood, including the potential influence of economic instability, climate issues, major societal disruptions, and social media.

Inhaled vitamin D may improve lung function and reduce flare‑ups in chronic lung diseases by delivering the vitamin directly to airway tissues, avoiding inactivation that occurs during oral digestion. Researchers from the University of North Carolina suggest the approach could better protect against pollutants and pathogens, supported by encouraging findings from animal studies and early trials in upper airway diseases. Further human clinical trials are recommended to determine effectiveness and safety, with potential additional benefits including reduced inflammation, a key driver of major lung conditions.

NASA’s Perseverance rover detected complex organic carbon in mudstones from Mars’ Jezero crater, marking the strongest such finding there so far. The discovery, located near earlier potential biosignatures, adds evidence that Mars may once have supported life. Scientists cannot yet determine whether the carbon is biological or from non-living sources, and the samples are expected to be returned to Earth for analysis between 2035 and 2039.

Perseverance detected complex organic carbon in two mudstones from Mars’ Jezero Crater, marking the most robust organic findings there to date. The discovery adds to evidence that ancient Mars had conditions suitable for life, though scientists cannot yet determine whether the carbon is biological or formed through non-living processes. Researchers used onboard instruments to map the carbon, which appears relatively unweathered. Determining its origin requires bringing the collected samples back to Earth, but the timeline for NASA’s sample‑return mission remains uncertain following program restructuring.

Researchers induced deep‑sleep–like brain activity in sleep‑deprived mice by stimulating specific brain regions with light pulses delivered through implanted fiber‑optic cables. The technique restored memory performance to levels similar to rested mice and reduced biological signals of sleep need. The NIH‑funded study suggests that targeted stimulation could eventually help counter the effects of sleep loss in humans using less invasive methods, addressing widespread sleep deprivation and associated health risks.

Researchers found widespread genetic mutations in rats and mice in the U.S. Northeast that are linked to resistance to commonly used blood‑thinning rodenticides. House mice show especially high rates of resistance‑related mutations, raising concerns about increased disease spread. The findings highlight the need for new pest‑control strategies, including improved sanitation, structural barriers and combined management tactics to reduce reliance on rodenticides that also harm wildlife.

The US ended its public health monitoring for passengers exposed to a hantavirus outbreak after all quarantines concluded without additional cases. Eighteen Americans had been quarantined in Nebraska and seven monitored at home following exposure on the MV Hondius cruise ship, where 13 infections and three deaths occurred. Officials credited coordinated federal and international efforts for preventing domestic transmission, while some passengers criticized prolonged quarantines and federal mandates. WHO and public health experts noted that although hantavirus is dangerous, it poses limited pandemic risk.

Nutrition experts highlight berries and leafy greens as top choices for their high antioxidant and fiber content and low sugar levels, while melons and grapes are noted for higher sugar-to-fiber ratios. Leafy greens help regulate blood sugar and offer essential nutrients, whereas white potatoes can raise blood sugar when prepared in starchy or fried forms, though they remain nutrient dense. Sweet potatoes provide valuable vitamins and antioxidants, and berries retain benefits whether fresh or frozen. Overall, consistent consumption of preferred fruits and vegetables is emphasized as key to a healthy diet.

Experts warn that invasive cane toads, which release a fast-acting toxin fatal to pets, are more prevalent with the start of the rainy season in the southeastern United States. Originally introduced to control agricultural pests, the species has spread through Florida and neighboring states and thrives in residential areas. Wildlife and veterinary organizations advise reducing attractants such as outdoor pet food, maintaining yards, and seeking immediate veterinary care if pets show symptoms of exposure. Pets can recover with prompt treatment.

Scientists rediscovered 18 sunflower sea stars off Northern California, offering hope for a species devastated by sea star wasting disease that killed billions and contributed to massive kelp forest loss. Researchers identified the bacterium Vibrio pectenicida as the likely cause of the die-off, while climate change and marine heatwaves continue to threaten kelp ecosystems. The find, part of a Sonoma State University expedition, provides valuable data for potential repopulation strategies including lab spawning, cross-breeding, and microbial pairing. Conservation groups are pressing for Endangered Species Act protection after the National Marine Fisheries Service missed a previous deadline, and NOAA Fisheries says work on the listing remains underway.

A long‑term study of more than 25,000 Americans found that drinking fruit juice, soda and other sugary beverages in childhood significantly increases the risk of developing high blood pressure in adulthood. Orange juice showed the strongest association, though some reports may have confused it with sugary orange‑flavored drinks. Researchers emphasized that whole fruit does not carry the same risks and that replacing sugary beverages with whole fruit, milk or water can substantially reduce future hypertension risk.

Falling asleep in 10–20 minutes is generally healthy, while drifting off within a minute may indicate sleep deprivation. Slow sleep onset can signal insomnia, which affects millions of Americans and is often linked to stress or chronic health conditions including respiratory, gastrointestinal, or neurological disorders. Experts note that sleep deprivation increases long-term risks such as obesity, diabetes, cardiovascular disease, and early mortality. Contributing factors to insomnia include restless leg syndrome, sleep apnea, anxiety, and depression. Women and older adults are more prone to sleep issues due to hormones and chronic health problems. Improving sleep hygiene through reduced screen time, cooler and darker rooms, and consistent sleep schedules can help, but persistent difficulty falling asleep for at least three nights a week over three months warrants medical evaluation.

Extreme heat significantly worsens chronic health conditions, increasing strain on the heart, impairing kidney function and raising risks of kidney stones, triggering or intensifying arthritis and gout through dehydration and inflammation, and exacerbating migraines due to temperature and pressure changes.

Experts warn that frictionless technology can diminish focus, memory and motivation, prompting interest in “friction‑maxxing,” the practice of reintroducing effortful tasks to strengthen cognitive health. Psychologists and researchers highlight that intentional, focused activities such as meditation, handwriting, puzzles and analog routines help form new neural connections, improve memory and enhance emotional well‑being. Studies show that older adults engaging in daily effortful tasks experience sharper cognition and reduced isolation. Experts also note that completing tasks with built‑in friction can increase fulfillment by aligning actions with long-term goals. Suggestions include cooking from handwritten recipes, paying with cash, doing puzzles, shopping in person and choosing activities that slow down routines and boost mindfulness.

Naegleria fowleri, a rare and highly lethal brain-eating amoeba, has been detected in numerous recreational water sources across major U.S. national parks, with contamination found in about a third of sampled sites. Experts warn that infections, though extremely rare, are almost always fatal and typically occur when warm freshwater enters the nose. Rising temperatures driven by climate change are expanding the amoeba’s geographic range northward. Doctors advise precautions such as avoiding submerging the head in warm freshwater and ensuring pools are properly maintained. Swallowing contaminated water does not cause infection, and person-to-person transmission is not possible.

Research from Cornell University finds that climate change–driven heat stress is reducing both the quality and quantity of U.S. milk, lowering protein and fat levels while cutting yields and revenues. A 10‑point rise in the temperature‑humidity index corresponds to a 1.2 percent drop in yield and a 2.8 percent revenue loss, totaling an estimated $1.65 billion over the studied period. Cows show limited resilience to heat or extreme cold, with NASA noting major livestock losses from temperature extremes. As dairy farmers face economic pressures and industry consolidation, researchers aim to identify more heat‑resilient cows and evaluate potential trade‑offs between milk composition and yield.

Researchers in China have developed a new automotive coating that absorbs 99.9 percent of visible light, surpassing previous ultra-black coatings by using structural absorption rather than carbon black alone. The method modifies surface structure to enhance light absorption and meets current automotive standards, though further testing is needed before commercial use. Research chemist Zhiwei Liu noted its appeal for luxury vehicles, referencing earlier ultra-black concepts such as BMW’s one-off X6 Vantablack, which similarly absorbed over 99 percent of visible light but was not market-ready due to environmental durability issues.

A decade-long study of more than 41,000 Chinese adults found the lowest health risks occurred when people sat for about four hours per day, with both less than two hours and more than six hours associated with higher adverse outcomes. Individuals sitting fewer than four hours benefited from replacing 30 minutes of activity with sleep or sitting, while those sitting longer saw greater benefits from substituting sitting with physical activity. The findings align with existing guidance to reduce prolonged sitting, reinforcing previous research linking extended sedentary time to increased cardiovascular risk, higher BMI, and mortality comparable to smoking or obesity.

New analysis of more than 175,000 adults across 18 countries shows that persistent loneliness increases the risk of severe and mild cognitive impairment and shortens lifespan, while simply being alone does not consistently contribute to decline. Researchers found that a 10 percent increase in reported loneliness was linked with an 8–9 percent rise in cognitive impairment risk and reduced chances of recovering mild impairment. Experts emphasize that loneliness is a subjective perception rather than a physical state of isolation and highlight its broader links to anxiety, depression, stroke and obesity. Recommendations to reduce loneliness include fostering gratitude, engaging in social connections, volunteering and maintaining regular interactions with others.

Howie Mandel describes a childhood experience in which fly larvae lived under his skin, prompting painful medical treatment and lasting psychological impact. Experts note the condition is consistent with myiasis, a rare infestation caused by fly larvae, and outline how such infections occur and are treated. Medical organizations explain typical transmission methods, symptoms, and preventive measures, while Mandel’s history of germaphobia and OCD provides additional context to his reaction to the ordeal.

Researchers from the University of Hawaii report that the San Andreas and San Jacinto faults in Southern California have reached critically high stress levels, raising the risk of major earthquakes. Simulations based on a millennium of seismic data indicate the possibility of a large, potentially simultaneous rupture affecting densely populated areas such as Los Angeles. The findings underscore the importance of emergency preparedness, hazard planning, and infrastructure resilience amid elevated probabilities of a magnitude‑7 earthquake in the coming decades.

Researchers from the University of Hawai'i report that the San Andreas and San Jacinto faults have reached their highest stress levels in a millennium, raising the risk of a major rupture in Southern California. Physics‑based modeling suggests the faults are in a critically loaded state, with the Cajon Pass potentially acting as a gateway that could allow simultaneous ruptures threatening densely populated regions including Los Angeles and San Bernardino. While the timing of a major earthquake cannot be predicted, scientists say the findings are vital for hazard assessments, infrastructure planning, and emergency preparedness due to the significant potential impact on millions of residents.

Experts recommend reapplying sunscreen every two hours, especially after swimming or sweating, and applying it 15 minutes before going outdoors. Skin cancer remains the most common cancer in the U.S., and frequent sunburns significantly increase melanoma risk. A shot glass-sized amount of sunscreen is advised, with SPF 15 as a minimum and higher SPFs offering greater protection. A newly approved ingredient, bemotrizinol, will soon improve UVA and UVB protection. Protective clothing and seeking shade are also recommended.

A Johns Hopkins University survey of over 2,100 U.S. adults found that more than 70 percent want a legal right to speak with a human rather than AI in settings such as medicine, courts, education, and government services. Respondents across political groups also support transparency requirements, including labeling AI-generated media and disclosing when interactions involve AI. Many expect AI to increase inequality and favor taxing AI companies to provide universal payments. Despite existing federal frameworks and laws targeting harmful deepfakes, concerns over AI’s expanding role in key industries continue to grow.

A tapeworm known as Echinococcus multilocularis has been identified in West Coast wildlife for the first time, with researchers finding it in one-third of surveyed coyotes in Washington’s Puget Sound region. The parasite can cause cancer-like cysts in humans and animals, though infections in people remain rare. Transmission occurs through a cycle involving rodents, coyotes, dogs, and contaminated food. Experts attribute the parasite’s spread to factors such as cross-border movement of dogs without required deworming. Preventive measures include avoiding exposure to rodent prey and ensuring dogs receive regular deworming and veterinary care.

AI models such as Google DeepMind are improving hurricane forecasting accuracy and speed, offering significant advantages over traditional methods as climate change drives stronger and less predictable storms. NOAA and other U.S. research institutions report substantial gains from incorporating AI, aiding earlier evacuations and saving lives. Experts note, however, that AI depends on historical data and may struggle with unprecedented events fueled by warming oceans. Growing energy use from data centers that power AI remains an added climate concern.

A first‑person account describes living with chronic venous insufficiency, a vascular condition recently reported in Donald Trump. The article explains symptoms, causes, and risk factors, noting that the condition is common in older adults but can affect younger people. Medical experts outline treatment options including compression socks, minimally invasive procedures and cosmetic interventions, while also highlighting costs and the need for ongoing management. The narrative emphasizes staying active, maintaining regular medical checkups and monitoring symptoms to prevent complications.

Research from the University of California San Diego indicates GLP-1 drugs such as semaglutide may slow biological aging by reducing inflammation and improving immune function. A 32‑week study involving adults with HIV found slowed aging markers in a portion of participants, especially those with steatotic liver disease. Scientists emphasize that the drugs do not reverse aging but may inhibit certain aging‑related biological processes. Larger trials are planned to confirm the findings and explore whether combining GLP‑1 therapy with healthy lifestyle practices could further reduce biological aging.

Nutrition experts identify pears, asparagus and lentils as common causes of gas due to their fructose, sorbitol, raffinose and FODMAP content. These compounds can ferment in the intestines and cause bloating, particularly in people with sensitive digestion or IBS. Portion control, gradual fiber increases and pairing high‑FODMAP foods with low‑FODMAP options can help reduce symptoms.

Federal regulators issued new warnings that the over-the-counter weight loss drug Alli may pose kidney injury risks, particularly for people with kidney disease or kidney stones. Twelve cases of kidney complications prompted updated FDA labeling, advising users to watch for symptoms and consult a doctor. Haleon stated the revisions expand existing warnings to include kidney disease. Both prescription and nonprescription orlistat products carry rare but potentially serious kidney risks. Alli has previously undergone reviews for liver concerns and has also faced issues with counterfeit versions. The article contrasts orlistat-based products with GLP-1 drugs like Ozempic and Wegovy, which work differently and are now widely prescribed.

A 30‑year study involving over 147,000 participants found that 90 to 120 minutes of weekly strength training is linked to reduced risks of premature death, including lower mortality from cardiovascular and neurological diseases. Benefits were greatest for individuals who combined strength training with aerobic exercise, particularly those achieving 30 to 44 metabolic hours of aerobic activity weekly. Aerobic exercise alone showed significant health advantages, though gains plateaued beyond 120 minutes of weekly strength training. Researchers noted that the survey‑based data cannot prove causation, and the findings align with CDC guidance recommending 150 minutes of aerobic activity plus two days of strength training each week.

Male breast cancer, though rare, affects about 2,670 men annually in the U.S., with approximately 530 expected deaths. Stigma often delays diagnosis, contributing to more advanced disease at detection. Former actor Tyler Mane recently revealed his diagnosis, emphasizing the need for awareness. Risk increases with age and rising obesity rates due to elevated estrogen levels. Treatment mirrors that for women, with mastectomy commonly used.