In recent months I've experienced some parts of the gluten-free diet, mainly by eating brown rice pasta. Those who suffer from stomach problems often turn to such a diet. I've recently read it can help athletes as documented in this recent Men's Journal article. One top pro cyclist had this to say:
“I was pleasantly surprised,” says Christian Vande Velde, Garmin-Transitions’s team leader, who was the first member of the team to experiment with going wheat-free during the racing season. “I just had all-around better digestion, and digestion is the biggest thing in utilizing the energy I consume.”