# Losing just 80 minutes of sleep leads to weight gain Cutting sleep by 80 minutes nightly results in 1 pound gain in 6 weeks - **Source:** [Latest Science News -- ScienceDaily](https://brifing.si/source/0eef8637-6c5b-4e79-8f5b-6c9c6b36cf16) - **Published:** 2026-07-13 - **Topic:** [Career Growth](https://brifing.si/c/growth) - **Original article:** - **On Brifing:** https://brifing.si/s/18af6be9-636e-4690-99c0-3e20905dd37b ## Sleep-weight connection Columbia University research revealed adults who slept just 80 minutes less nightly gained an average of 1 pound over 6 weeks while becoming more sedentary. These findings highlight sleep's crucial role in weight management and obesity prevention. ## Moderate sleep reduction Unlike previous extreme sleep deprivation studies, this research examined mild sleep loss common among people getting 5-6 hours nightly. The 95-participant study showed measurable metabolic impacts from just 90 minutes of reduced sleep duration. ## Increased inactivity During sleep restriction, participants spent 17 more sedentary minutes daily on average, with postmenopausal women and men showing nearly 30 minutes more inactivity. Researchers note prolonged sitting elevates chronic disease risks. ## Metabolic consequences Earlier studies found women losing 80 minutes of nightly sleep developed increased insulin resistance after 6 weeks. Mild sleep restriction also caused inflammatory cell influx in hearts of cardiovascular risk patients. ## Long-term implications Researchers emphasize that while a 1-pound gain in 6 weeks seems modest, extrapolated over a year it could become clinically significant. Sleep loss consistently shows links to increased type 2 diabetes and heart disease risks. ## Sleep for healthy living The study demonstrates that focusing solely on diet and exercise for weight control is insufficient. Adequate sleep emerges as critical in obesity prevention. Researchers now plan to examine health impacts of improving sleep quality in chronic sleep-deprived individuals. ## Sources covering this story - https://www.sciencedaily.com/releases/2026/07/260713000800.htm — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._