While research into medications to treat osteoarthritis and rheumatoid arthritis goes on, many people who suffer from these conditions have turned to diets and supplements that claim to relieve pain. But does an alkaline diet, a dong diet, or a vegetarian diet really ease arthritis? What about supplements such as gin-soaked raisins, ginger, or green tea? Experts at WebMD review these and many other diets and supplements to find out what these "natural" approaches may--or may not--do to treat...