Study: Early Time-Restricted Eating is an Effective Means of Weight Loss

A new study shows that early time-restricted eating (eTRE) is a more effective way of losing weight than eating over a period of 12 or more hours. The findings were published in JAMA Internal Medicine. 

In this 14-week, parallel-arm, randomized clinical trial, researchers assessed 90 adults with obesity between August 2018 and April 2020. The population of interest were randomized to either eTRE plus energy restriction (defined as eating over a 8-hour window from 7:00 to 3:00) or controlled eating plus energy restriction over a 12-hour window. The key outcomes of interest were defined as weight and fat loss, while the secondary end points included blood pressure, heart rate, glucose levels, insulin levels, and plasma lipid levels.

According to the findings, the eTRE+ER intervention was observed to be more effective for losing weight (−2.3 kg; 95% CI, −3.7 to −0.9 kg; P = .002). Moreover, the eTRE+ER intervention also improved diastolic blood pressure (−4 mm Hg; 95% CI, −8 to 0 mm Hg; P = .04) and mood disturbances, including fatigue-inertia, vigor-activity, and depression-dejection, the researchers noted.

“Early time-restricted eating was more effective for weight loss than eating over a window of 12 or more hours; larger studies are needed on fat loss,” the researchers wrote in conclusion.