Ayurveda is a holistic healing science dealing not only with treatment of some diseases but is a complete way of life.
Ayurveda aims at making a healthy and peaceful society. The three most important aims of Ayurveda are,
» To maintain the health of healthy people and help them to attain the four principles of life-Dharma, Artha, Kama & Moksha.
» To cure the diseases of sick people.
» Longevity or age reversal
In short,
» Preventive » Curative » Reguvenative
Basic theory of Ayurveda
Any material in the universe is composed of five major elements of nature namely,
» Akash(Space) » Bhoomi (Earth) » Jal(Water) » Vayu (Air) » Agni (Fire)
These five elements combine in pairs and form three forces –“Doshas”-Vata, Pitta, Kapha. There are seven Dhatus or tissues in human body.
These are Rasa(Chyle),Raktha(Blood), Mamsa (Flesh), Medus(Fat),Asthi (Bone),Majja (Marrow), Sukla (Reproductive elements)
There are three malas- Sakrut (faeces), Moothra(Urine),Sweda (Sweat)
Ayurveda believes that good health results when the three  Doshas remain in a state of equilibrium and ill health results when this equilibrium is upset.
History of Ayurveda
Ayurveda is the most ancient (5000 yrs old) and holistic medical system based on achieving physical and mental harmony with nature. The ancient wisdom of this healing system was a part of the spiritual tradition of the Vedic religion and its true history starts from the time of holy books-Rigveda ,Yajurveda, Samaveda and Atharvaveda. Among these Vedas, Atharva Veda list the eight divisions of Ayurveda namely,
» Kaya Chikitsa (Internal medicines ) » Bala Chikitsa (Paediatrics) » Graha Chikitsa (Spiritual healing)
» Urdwanga Chikitsa (Cranial Organo Medicine) » Shalya Chikitsa (Surgery) » Damshtra Chikitsa (Toxicology)
» Jara Chikitsa (Rejuvenating Remedy) » Vrusha Chikitsa (Aphrodisiac Remedy)    
These eight divisions are known as “Ashtanga Ayurveda”.
There are three main Ayurvedic texts –Charaka Samhitha, Susrutha Samhitha and Ashtanga Hridaya Samhitha. These books are believed to be over 1200 yrs old. It is because these texts still contain the original and complete knowledge of this Ayurvedic world medicine, that Ayurveda is known today as the only complete medical system still in existence.
Benefits of Ayurveda
Individual’s holistic health is the most beneficial aspect of Ayurvedic medicine. It works on the principle that a perfect health condition is achievable through the psychosomatic integration in a person. Ayurveda provide us with a unique physical purification method called Panchakarma and various Ayurvedic herbal health remedies for mental and spiritual well being. Holistic health benefits of Ayurveda encompass the physical, psychological and spiritual aspects of a person. Ayurveda offers numerous unique benefits,
» It heals from the root cause of an illness, not merely treating the symptoms.
» Has no harmful side effects
» Gives happy, healthy disease free long life
» Makes you Tension Free
» Relaxes mind
» Provides knowledge about life
» Tells about good and bad dietary effects to life
» Tells the way for moksha, with keeping good  health status
» Helps to achieve - dharm, arth, kama, moksha
Ayurveda emphasizes more on prevention of diseases rather than its cure. The treatment given is not only to the ailments or the affected parts, but to the person as a whole. This creates an environment for purifying the body naturally, which eliminates all toxic imbalances, enabling to regain natural resistance from diseases and attain good health. 
Ayurveda provides detailed instructions of daily regimen, seasonal regimen, food, sleep and sexual behaviour so that health can be optimized and illness healed.
The treatment methods, diet and life style regimen in Ayurveda are meticulously planned to heal the body as well as enrich the mind and the soul of each different individual. So that each can improve from their own levels to the higher goal of realizing the full self-potential.