 It's a fact that one in four people suffer from arthritis and joint pain, so what do you do about it? You adopt a vegan diet. That's what? This is according to new research in the American Journal of Lifestyle Medicine. For this new study, half the arthritis patients were put on a strict vegan diet for four months. The result? Without fail, those on a vegan diet reported significantly less severe pain over time, and the number of times their joints swelled to painful levels was cut in half.