Ayurveda is not merely a medical science. It is a complete life science. The first aim of Ayurveda is to maintain the health of healthy person so that no disease should manifest. Treatment of diseases is the second aim of Ayurveda. Most of the health problem develops due to thewrong eating habits and looking methods. Ayurveda deals with the pathya and apathya or pathyavyavastha (planning of diet dietetics) in a very scientific and holistic way of dietetics. Aahar and Vihar which is beneficial and nutritional to the body and also give the happiness to the mind is known as pathya and Ahara and vihara which is opposite to the pathya is known as Apathya. Ghee, amla, saindhav, mudag, cow milk, rain water all these things are including in pathya and it helps to improve immunity, opposite to pathyagomansa, aluka, masha, hastimeda, dry and light food and drink is apathya, which is responsible for a decrease immunity.

Pathya, Apathya, Pathya vyavastha, Immunity, Ahara, Vihara.