Carlo Simone

Sun cream stains are attributed to oils and mineral reactions involving UV filters such as avobenzone and minerals in tap water. Experts recommend rinsing garments in cold water, pre-treating with washing-up liquid, using diluted white vinegar or baking soda where appropriate, washing gently at low temperatures, and avoiding bleach, hot water and tumble drying until the stain is gone. Coloured and delicate fabrics should be tested first, while swimwear requires especially cool, gentle treatment to protect elastane.

A pilot study of 47 overweight or obese women aged 50 to 79 found that those who limited eating to a nine-hour window performed somewhat better on spatial planning, problem-solving, memory and learning tests than those eating over 12 hours. Both groups reduced their daily intake by 500 calories and lost about 7kg, suggesting meal timing may provide benefits beyond weight loss. Researchers cautioned that the effects were modest and preliminary, while an independent expert said peer-reviewed data is needed to establish clinical significance. The findings may be relevant to dementia prevention because obesity in midlife raises later-life dementia risk, but further research is needed to explain the possible roles of circadian rhythms, metabolism and inflammation.