Health & Fitness

Type 2 diabetes doesn’t just raise the risk of heart disease—it physically reshapes the heart itself. Researchers studying donated human hearts found that diabetes disrupts how heart cells produce energy, weakens the muscle’s structure, and triggers a buildup of stiff, fibrous tissue that makes it harder for the heart to pump. These changes are especially severe in people with ischemic heart disease, the most common cause of heart failure.

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Your daily rhythm may matter more for brain health than previously thought. Older adults with weaker, more disrupted activity patterns were far more likely to develop dementia than those with steady routines. A later daily energy peak was also linked to higher risk. The study points to the body clock as a possible early warning sign for cognitive decline.

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The brain constantly blends split-second reactions with slower, more thoughtful processing, and new research shows how it pulls this off. Scientists discovered that brain regions operate on different internal clocks and rely on white matter connections to share information across these timescales. The way this timing is organized affects how efficiently the brain switches between activity patterns tied to behavior. Differences in this system may help explain why people vary in cognitive ability.

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Menopause symptoms are common among female endurance athletes and often interfere with training and performance. A survey of women aged 40–60 who train regularly found high rates of sleep problems, exhaustion, anxiety, weight gain, and joint pain. Many athletes said these symptoms made it harder to train effectively or perform at their best. The results highlight a need for greater attention to menopause in active women.

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