Avoid overeating. A fundamental teaching of Ayurveda is that the common cause of all diseases is the accumulation of waste and poisonous matter in the body which results from overeating. Every disease can be healed by only one remedy – by doing just the opposite of what causes it, that is, by reducing the food intake or fasting. The majority of persons eat too much and follow sedentary occupations which do not permit sufficient and proper exercise for utilisation of this large quantity of food. This surplus overburdens the digestive and assimilative organs and clogs up the system with impurities or poisons. Digestion and elimination become slow and the functional activity of the whole system gets deranged.