Water chestnuts are very effective against inflammation because they are rich sources of vitamin c as well as other vitamins like b6 (pyridoxine), b12 (cyanocobalamin), k2 (potassium), folic acid (folate), niacin, pantothenic acid (vitamin b5). Water chestnut also contains calcium which helps fight against arthritis by strengthening bones. It also contains potassium which helps maintain normal blood levels.