Ayurveda, derived from the Sanskrit words 'ayus' (life) and 'veda' (knowledge), is the oldest medical system, originating in India nearly 5000 years ago. It focuses on maintaining health and alleviating disease through a comprehensive understanding of the human body, which is analyzed through theories like tridosha (the three doshas: vata, pitta, kapha) and the five elements (panchabhuta). The practice involves various branches and treatment modalities, including preventive and curative measures, as well as classical texts that lay the foundation for its principles and practices.