Marketed as nature’s sleep switch, melatonin has become a nightly habit for millions. But new research presented this week at the American Heart Association’s Scientific Sessions 2025, suggests the supplement may do more than quiet the mind…

Marketed as nature’s sleep switch, melatonin has become a nightly habit for millions. But new research presented this week at the American Heart Association’s Scientific Sessions 2025, suggests the supplement may do more than quiet the mind…