Benefits of Calorie CountingIt’s a popular school of thought that weight loss is simple math: calories in versus calories out. Some research does suggest that calorie counting is an effective way to lose weight. Calorie Counting Can Support Short-Term Weight Management[13] A review concluded that restricting calories — either by eating less throughout the day or at specific times — can be an effective way to support weight loss. There’s not a lot of long-term research on weight loss through calorie restriction, so it’s difficult to say whether it’s effective for keeping weight off in the long run. Calorie Counting Isn’t Just Helpful for Weight LossCalorie counting can also be useful for people who are trying to gain weight, including athletes.