Recent studies have shown that fasting diets, cycling between regular food consumption and fasting, can lead to increased metabolism and weight loss. Periodic fasting has also been linked to remarkable health benefits including a lower risk of diabetes, heart disease, cancer, and aging.
In the current study, the researchers wanted to establish whether the benefits of a fasting diet can be attributed to calorie restriction or to a limited eating schedule. They focused their investigation on a type of intermittent fasting known as early time-restricted feeding (eTRF).
For five weeks, men with prediabetes ate breakfast between 6:30 and 8:30 a.m., and ate dinner no later than 3:00 p.m. The participants fasted for the remaining 18 hours.