Brain health Archive

Physical activity, even as little as 15 minutes a day of moderate-intensity exercise, is linked with a lower risk of stroke and death in people with atrial fibrillation.

Men without evidence of low testosterone levels (hypogonadism) who use testosterone appear to face a higher risk of serious cardiovascular problems and death from all causes than men who use testosterone replacement therapy for documented hypogonadism, according to a 2026 study.

Migraine can’t be diagnosed using a blood test, imaging scan, or biopsy. Rather, doctors typically diagnose this headache disorder solely through a person’s reported symptoms (including how often they occur and how long they last), triggers, and a family history of migraine.

Caffeine is likely to help prevent or dull headaches when it’s used consistently and in moderation. For most adults, moderation means the amount in about one to two cups of coffee a day.

When clonazepam doesn’t ease the unsteadiness of orthostatic tremor, other medicines may offer options to discuss with your doctor.

Flashes of light may be harmless, but some patterns deserve prompt medical attention.

Transparent circles or other visual changes can appear before migraine pain. Find out what these symptoms may mean and what to discuss with your doctor.

Symptoms of atrial fibrillation include a fluttering, pounding sensation in the chest and a lightheaded, dizzy, or breathless feeling. But about a quarter of people with this disorder don’t notice any symptoms.

A 2026 study found that older “super-movers”—adults 80 and older who walk significantly faster than their peers—were substantially less likely than slower walkers to develop cognitive impairment and had larger memory-related brain regions, suggesting that brisk walking speed may signal, or even support, healthier brain aging.

A 2026 study suggests that people who do up to two hours of strength training each week over several decades may have a lower risk of dying earlier from several serious conditions, including heart disease and neurological diseases such as dementia.