Eating a big breakfast could become a popular new diet fad for people who want to lose weight. There was a study on how a big breakfast affected the body's metabolism. Sixteen men ate a low-calorie breakfast and high-calorie dinner. Eating a bigger breakfast and smaller dinner boosted diet-induced thermogenesis (DIT). This is the generation of body heat to burn calories. This happened even when the total calories per day was the same.

A big breakfast led to 2.5 times higher rates of DIT. The study showed that a big breakfast, regardless of the number of calories, creates twice as much DIT as the same meal eaten for dinner. The study said: "Eating more at breakfast instead of dinner could prevent obesity and high blood sugar. We recommend that patients with obesity…eat a significant breakfast rather than a large dinner to reduce body weight and prevent metabolic diseases."