Immunity means the natural body mechanism through which our body protects itself from various diseases. According to Ayurveda there are many factors which contribute to our immunity. One of such things is the “Oja”. According to Ayurveda there are 7 basic body tissues which form the human body and all the functional systems of the body, these are; Rasa (Nutritive Fluid), Rakta (Blood), Mamsa (Muscles), Meda (Lipids), Asthi (Bones), Maja (Marrow) and Shukra (Reproductive cells). These are known as the “SaptaDhatu”. The essence of these 7 tissues is known as “Oja”. And if this Oja is in a balanced state and functioning properly you won’t have any disease.