The word Ayurveda is composed of two Sanskrit terms - Ayu meaning life and Veda meaning knowledge. Therefore Ayurveda means the knowledge of life or science of life. It is defined as the science, through which one can obtain knowledge about the useful and harmful ways of life, happy and miserable types of life, conditions that lead to the above types of life, as well as, the very nature of life.

According to Ayurvedic medicine, human body consists of three primary life forces or biological humors, which are Vatha, Pitha and Kapha. These three doshas are called the tridoshas. A balance among these life forces is essential for proper health. Any imbalance among the tridoshas causes a state of unhealthiness or disease.

The first step in the method of diagnosis in Ayurvedic form of medicine is to determine the constitution of the person. That means it is the patient who is diagnosed first and not the disease.

The same disease might appear in different forms in two persons because their constitution is different. Due to this variation in constitution the medicines and treatment may be different for two people with the same illness. This difference in treatment methods according to the constitution is essential to bring back the natural balance of the biological humors. The constitutional approach is the essence of the Ayurvedic system. Understanding ones constitution helps one to lead a life style that is most befitting his constitution, thus optimizing his health and creative potential.

Laws of Nature and Spirituality In essence, Ayurveda explains the laws of nature that cause health or disease. The first cause of illness is said to be the loss of faith in the Divine or experiencing a spiritual emptiness. From here illness develops due to internal conditions (e.g., foods and liquids) or external conditions (e.g., seasons, lifestyle). The main factors that cause poor health (also described as imbalance) are 1) Poor digestion and 2) Weak immune systems.

When food is not properly digested, it sits in the body. Nutrients are not absorbed and the food decays and forms toxins. These toxins cause most diseases in the body. Therefore, it is important to have good digestion.

The immune system can become depleted by poor nutrition, overwork, drugs and other excesses. The finest essence of nutrition develops a life sap that protects the immune system, much like the sap of a tree heals the bruises in its bark. In addition to promoting physical health, it is the life sap that becomes transformed through meditation to produce mental peace and spiritual development. With all the immune disorders that are prevalent these days, it is even more important that persons develop their immune sap.