Most people start IF to lose weight. And that claim seems to hold up, at least in the short term. According to an article published in August 2015 in the
Journal of the Academy of Nutrition and Dietetics, there’s a chance that any version of IF may contribute to weight loss. The researchers looked at data from 13 studies and found that average weight loss ranged from 1.3 percent for a two-week trial to 8 percent for an eight-week trial.