Haub capped his daily calorie intake at 1,800 in order to test whether calorie restriction matters more for weight loss than the nutritional value of food. CNN reports:

A man of Haub’s pre-dieting size usually consumes about 2,600 calories daily. So he followed a basic principle of weight loss: He consumed significantly fewer calories than he burned.

His body mass index went from 28.8, considered overweight, to 24.9, which is normal. He now weighs 174 pounds.

Does that mean he’s healthier? Read the full CNN story here.