People with obesity who kept up either time-restricted eating or cutting calories on their own after a 12-week program didn’t gain much weight back over the next 3 to 6 months.

People with obesity who tried time-restricted eating kept their weight steady after finishing the program, but those who cut calories lost about 1.6 kilos a month later—though they gained it back within three months.

If you're an adult with obesity, eating only during a certain window each day for a year won't help you lose more waist size, weight, or fat—or improve your blood pressure and metabolism—any better than just eating fewer calories every day.

When obese women only eat during a short window each day (without counting calories), they lose less weight and gain more belly fat than when they eat fewer calories overall.

About half of the people who finished a 12-week diet program were still sticking to their diet plan six months later, whether it was eating within a certain time window or cutting calories.

People who are obese and eat only during an 8-hour window each day—without counting calories—stick to this routine 87% of the time for a full year, which suggests it’s a practical way to manage weight long-term.