Tag
Insomnia
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Melatonin: uses, evidence, dosing and safety
Melatonin shifts the body clock rather than causing sleep, which is why it works well for jet lag and badly for ordinary insomnia. In adults it cuts time-to-sleep by about five minutes.
Aug 5, 2026
Short and long sleep both tracked with Alzheimer changes
Using brain scans from 38,816 UK Biobank participants, researchers found a U-shaped pattern: five to six hours and nine to ten hours both lined up with more Alzheimer-like shrinkage and worse test scores.
Aug 4, 2026
A menopause sleep drug worked at week 4, then didn't
A SLEEP trial gave 110 postmenopausal women elinzanetant or placebo and measured sleep in a lab. The 22-minute advantage at four weeks had vanished by twelve.
Jul 29, 2026
Weak grip and low weight tracked with insomnia after 60
A SLEEP study of 5,824 older adults found low muscle strength and being underweight each tracked with insomnia, and together more than doubled the odds.
Jul 28, 2026