Columbia University study links short sleep to modest weight gain

A recent study conducted by researchers at Columbia University found that reducing nightly sleep by about 80 minutes for six weeks caused participants to gain roughly one pound, despite the modest change. The trial involved 95 adults who wore wrist monitors to track sleep, activity, body composition and hormone levels that regulate appetite. Researchers observed increases in weight, waist circumference and hormones that stimulate hunger.

The findings add to broader advice on sleep health, noting that roughly 15 % of adults experience chronic sleep problems that can affect cardiovascular risk, concentration and mood. Common contributors to poor sleep include irregular habits, excessive caffeine, alcohol, nicotine, late‑night exercise and mental stress. Experts caution against reliance on sleeping pills, emphasizing lifestyle adjustments such as consistent bedtime routines, limiting stimulants and managing stress to improve sleep quality.