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Intermittent fasting and conventional calorie counting show comparable effectiveness for weight loss
Overview
A small randomized controlled trial found that time-restricted eating, also known as intermittent fasting, produced similar weight loss results to traditional calorie counting in a racially diverse population of adults with obesity. The study also showed that participants who engaged in 8-hour time restricted eating had improved insulin sensitivity compared to those in the control group who ate their calories any time over 10 or more hours a day.
Researchers from the University of Illinois Chicago studied 90 adults with obesity from the Greater Chicago area to determine whether intermittent fasting or calorie restricted eating would be more effective for weight control and cardiometabolic risk reduction. Participants were randomly assigned to 1 of 3 groups: 8-hour time-restricted eating (eating from noon to 8:00 p.m. only, without calorie counting); calorie restriction (reduce 25% of their calories daily), or no change in calorie consumption, with eating taking place over 10 hours or more throughout the day.
Both the time-restricted eating and calorie restriction groups met regularly with a dietician. Participants were not blinded. The authors found that participants who engaged in time-restricted eating ate 425 fewer calories per day than the control group and lost about 10 more pounds than the control group after one year. The calorie-restricted group ate 405 fewer calories per day and lost about 12 more pounds after one year. Participants showed high adherence to both interventions.
Reference:AMERICAN COLLEGE OF PHYSICIANS, Annals of Internal Medicine, DOI 10.7326/M23-0052
Speakers
Isra Zaman
B.Sc Life Sciences, M.Sc Biotechnology, B.Ed