News summary produced by Claude AI
Research published in Clinical Nutrition examined the long-term effects of intermittent fasting on weight management in overweight and obese adults. The study followed 99 participants, half of whom were women, who participated in a structured 12-week intervention followed by a one-year monitoring period. The research investigated the popular 16:8 intermittent fasting approach, in which participants fast for 16 hours daily and consume food during an eight-hour window.
Participants were divided into four groups: a control group that maintained a standard eating window of 12 hours or longer, an early fasting group with an eating window beginning before 10:00 a.m., a late fasting group with a window beginning after 1:00 p.m., and a self-selected group that chose their own eight-hour eating schedule. All participants received education about following a Mediterranean diet during the initial 12 weeks. Researchers measured body weight, fat mass, and fat-free mass at baseline, after the intervention, and again one year later.
The findings demonstrated that both the early and late fasting groups maintained significantly greater weight loss one year after the intervention ended compared to the control group. The early fasting schedule additionally resulted in greater preservation of fat mass reduction. The results did not show substantial differences between early and late eating windows in terms of overall weight maintenance, suggesting that the timing of the eating window did not substantially influence outcomes.
Researchers noted that one in three participants continued practicing intermittent fasting independently during the follow-up year, indicating the approach may be relatively sustainable in real-world settings. The research team, which included scientists from the University of Granada, the Granada Institute for Biomedical Research, the Public University of Navarra, and associated research centers, concluded that a 12-week intermittent fasting program could represent an effective medium-term weight management option. The flexibility in scheduling eating windows may make the approach more practical for individuals seeking obesity treatment and weight maintenance.