Does being vegan helps in decreasing symptoms of arthritis and heart problems in patients that had rheumatic fever before? it worked for me.

Anti-inflammatory : Vegan & vegetarian diets have been shown to significantly reduce the risk of cardiovascular disease, though I am not aware of any research re: such diets and rheumatic heart disease. Vegan diets are anti-inflammatory as they tend to be low in pro-inflammatory fats found in animal foods & thus should help arthritis. Many with arthritis have symptoms aggravated by dairy & eggs, which vegans avoid.