Intermittent fasting has become a popular way to lose weight, and various types of intermittent fasting exist. One of these methods is time-restricted eating (TRE), which involves limiting your eating to a specific window of time each day. A recent study conducted at the University of Alabama at Birmingham Hospital compared early time-restricted eating (eTRE) with eating over a period of 12 or more hours and found that eTRE was more effective for weight loss.
The study involved 90 adults with obesity who received weight-loss treatment through the Weight Loss Medicine Clinic at the University of Alabama at Birmingham Hospital. All participants received weight-loss treatment and were randomized to eTRE plus energy restriction (ER) or control eating plus ER. The eTRE+ER group adhered to the intervention 6.0 days per week.
After 14 weeks, the eTRE+ER intervention was more effective for losing weight (−2.3 kg) than eating over a window of 12 or more hours, which resulted in a weight loss of −1.4 kg. The effects of eTRE+ER were equivalent to reducing calorie intake by an additional 214 kcal/d. However, eTRE+ER did not affect body fat or the ratio of fat loss to weight loss.