Food items that spoil the blood are polished grains, White sugar, root vegetables, fish, egg, meat, excess tamarind, spices, oil, food cooked in oil, ice-cream, tinned foods, biscuits, chocolates etc., and if taken excessively force the digestive system to work harder and make it weak. Wastes in the body accumulate as a result of which we become sick. So if it cannot be avoided just take only 25% of this kind of food, and when you are sick avoid this food completely.