Kate Lloyd

Scalp “detox” is largely a marketing term rather than a process that removes dangerous toxins, but occasional deep cleansing may help remove product and mineral buildup from the scalp. Dermatological science professor Desmond Tobin says buildup can clog follicle openings and potentially interfere with hair growth, particularly for people using many hair products, living in hard-water areas, or residing in polluted cities. He recommends a sulfate-free, high-lather shampoo or double-shampooing instead of necessarily buying expensive specialist products.

An ice-cold shower may make it harder to sleep because the shock triggers adrenaline and cortisol and constricts blood vessels, trapping heat inside the body. For ordinary cooling before bed, a tepid shower in the mid- to high-20s Celsius is more effective because it keeps blood flowing to the skin, while very cold water is mainly useful for treating severe heatstroke.

Sit-ups engage the abdominal muscles but rely substantially on the hip flexors, particularly the psoas major, so they may not isolate the abs effectively. Excessive sit-ups can contribute to tight hip flexors and lower-back problems. Strength and conditioning expert Lee Brown recommends planks, side planks, loaded carries and bird dogs, while Pilates and yoga may also improve core strength.

Experts outline updated standards of politeness across work, public spaces, dating, messaging, content creation and social events, stressing respect, boundaries and awareness of how behavior affects others. They highlight issues such as out‑of‑hours emailing, overly brief online communication, public phone use, inconsiderate dating habits, intrusive content creation, misuse of group chats and poor event manners, offering guidance to avoid rudeness in modern social environments.

Frequent eating slightly increases energy use due to the thermic effect of food, but the impact is too small to meaningfully boost metabolic rate or assist weight loss. Resting metabolism is largely fixed by factors such as body size, age and sex, and the most effective way to increase energy expenditure is through greater physical activity.

Vitamin C does not block UVA or UVB rays but may help neutralize free radicals generated by sun exposure, offering additional protection when paired with sunscreen. Research indicates that antioxidants such as vitamins C and E can enhance UVA protection only when used alongside established sun-protection products. Dermatologists stress that proper sunscreen use and sun‑safe habits remain essential.

Research shows mixed findings on whether beards harbor more bacteria than clean-shaven faces, with early studies suggesting unwashed clean‑shaven faces may retain more bacteria than bearded ones. Studies in medical settings offer inconsistent results, but proper mask use minimizes any risk. Experts conclude that bacterial presence on facial hair is normal and rarely a hygiene concern unless an open wound is present.

Scientific studies show the “five‑second rule” is false, with bacteria transferring to food almost immediately and remaining on surfaces for hours. Wet foods on hard surfaces pick up the most contamination, and even hours‑old bacteria can transfer. Dropped food should be discarded, as rinsing cannot reliably remove microbes, particularly for people vulnerable to infection.

A dietitian explains that sugar itself is not inherently toxic and that perceived health improvements often come from reducing ultra‑processed foods rather than sugar alone. Controlled studies show that high‑sugar diets do not worsen weight, metabolism or key health markers when calorie intake is matched. Health risks arise from chronically elevated blood sugar rather than occasional consumption, and whole fruits remain beneficial due to their fibre and nutrients despite their sugar content.

Claims that women should tailor workouts to menstrual‑cycle phases lack solid evidence. Research cited by a University of Leicester physiologist finds muscle‑building ability remains consistent across cycle phases, though individual symptoms such as cramps or fatigue can influence perceived strength. Personal monitoring of how one feels is advised, while further research is needed on women’s physiological responses to exercise.

Creatine is a well‑researched supplement that can enhance short‑burst athletic performance by supporting ATP production, with emerging but still inconclusive evidence for cognitive benefits. Experts say it may be useful for dedicated athletes or individuals with optimized nutrition seeking further improvement, but it is unnecessary for most people. Established dietary sources such as oily fish and plant seeds remain more reliable options for general physical and brain health.

High temperatures from frequent or prolonged sauna use can reduce sperm production, but the effect is typically insignificant for most men. Fertility may only be affected in those with already low sperm counts. Experts advise moderating excessive habits to avoid potential impacts on reproductive health.

Lungs have a significant ability to heal after a person stops smoking, though the extent varies and some smokers experience permanent damage. Smoking and vaping introduce more toxins than the lungs can manage, and quitting earlier improves the chances of recovery as regenerative capacity declines with age. Exercise supports lung function by improving gas‑exchange efficiency, but past genetic or tissue damage can still increase long‑term health risks, including cancer.

Women and men build muscle at similar relative rates despite men having higher testosterone levels and a greater baseline muscle-to-fat ratio. Both sexes can follow similar resistance training principles, though women typically retain a higher fat proportion, and pushing body fat too low can carry health risks such as hormonal disruption and fertility impacts.

High LDL cholesterol can occur in people of any weight, with genetics being the primary driver and diet a secondary factor. Obesity has little effect on LDL levels but significantly increases triglycerides, remnant cholesterol, and related risks, while also contributing to diabetes and high blood pressure. UK adults over 40 can receive an NHS health check to assess cardiovascular risk, and those with a family history of early heart disease should seek earlier evaluation.

Research links gut microbiome diversity with better health, but scientists note that correlations do not fully explain how microbes influence immunity. Emerging findings suggest microbial competition, rather than diversity alone, may play a key role in maintaining balance and reducing disease risk. Experts advise caution toward commercial products claiming to reshape the microbiome, as reliable methods for defining or engineering a healthy microbiome are still lacking.

Experts highlight the importance of power, the ability to generate force quickly, as a key component of long-term physical function. While muscle mass naturally declines with age, neuromuscular speed can still improve, helping maintain mobility and reduce injury risk. Power training uses light to moderate loads moved rapidly, through exercises such as jumps, medicine ball throws and kettlebell swings. Short, early‑session power blocks added to regular workouts can build capability, assist older adults in regaining functional abilities and help experienced lifters break through strength plateaus. Consistency, proper form and gradual progression are emphasized, with sports offering an accessible alternative for beginners.

Dietary attempts to boost testosterone have limited impact on muscle growth because natural fluctuations remain small and muscle response depends on both hormone levels and androgen receptor activity. Testosterone strongly affects muscle only at extreme highs, such as with anabolic steroids, or extreme lows, as in hypogonadism. For most people, building muscle relies primarily on consistent training, proper nutrition and time.

Fibre intake is rising in popularity, but large increases can overwhelm the gut. Most people consume far below the recommended 30g daily, a level linked to reduced risks of bowel cancer, heart disease, diabetes and improved digestion. Benefits may continue at higher intakes, but rapidly jumping to high amounts can cause discomfort and may lead to restrictive habits. Gradual increases with adequate hydration are advised to maintain comfort and enjoyment in healthy eating.

Robyn reflects on her return to music with Sexistential, shaped by single motherhood, IVF, and a renewed sense of sexual and creative freedom. She discusses breaking from a restrictive early career in the pop industry, the challenges of dating and parenting alone, and how past exploitation informed her artistic autonomy. The interview traces her evolution from teen star to influential independent artist, her experiences navigating sexism in the industry, and her current focus on balancing motherhood with a revitalized creative life.

Weight loss requires sustaining a calorie deficit, which can be created through increased activity, dietary changes or both. Exercise alone is often insufficient because burning large numbers of calories through workouts is challenging, making nutrition a key factor. Recommended dietary focus includes protein, vegetables, fruit, healthy fats and moderate wholegrains. Increasing general daily movement can be more effective than relying solely on formal workouts. Exercise still offers significant health benefits, including better mental health, cardiovascular fitness, bone strength and fall prevention, and meeting NHS activity guidelines is encouraged.

Grey hairs do not multiply when plucked, as each follicle produces only one hair and repeated plucking can damage follicles enough to stop growth entirely. Overplucking trends such as thin eyebrows in past decades demonstrate permanent loss risks. Genetics determine greying, while stress, poor sleep and nutrient deficiencies may accelerate ageing-related changes. Grey and white hairs can grow as well as or better than pigmented ones, sometimes showing faster growth rates.

After losing his arm in a workplace electrocution, Jason Barnes rebuilt his life by developing a series of increasingly advanced drumming prosthetics, eventually collaborating with Georgia Tech engineers to create a sensor-driven robotic arm capable of exceptional speed and precision. His innovation led to a Guinness World Record and inspired the founding of Limitless Sound, a nonprofit aimed at improving accessibility to musical prosthetics for disabled musicians. Performances and public engagement showed him that his recovery resonated widely, offering encouragement to others facing similar challenges.

Men usually require more calories than women because they tend to have higher resting metabolic rates driven by greater muscle mass influenced by testosterone. Individual variation means some women may need more calories than some men, especially when muscular or more active. Age, long-term dieting and activity levels also affect calorie requirements, and guidance from NHS and WebMD can help individuals estimate their needs.