... toxicology, psy-chiatry, sexual vitality, rejuvenation and care of the elderly, and gynecology, obstetrics and pediatrics. [15]Ayurvedic theory is based on three doshas (constitutionaltypes), and ... tomodify the potency, toxicity and efficacy of the drugs. [17]Astrology and incantation are also an integral part of Sid-dha therapy. Use of Siddha medicine is most prevalent inTamil Nadu, the ... variety ofphysiological and psychological benefits. [18,19] The Indian government does not collect data on the numberof registered practitioners of therapeutic yoga, and itgroups together research...