For the development of Siddha system of Medicine, Govt. of India, by bifurcating the erstwhile CCRAS, formed CCRS (Central Council for Research in Siddha) with its headquarters in Chennai and five Research Institutes/Units in three states namely, Tamil Nadu (Chennai, Mettur & Palayamkottai), Puducherry (Puducherry) and Kerala (Thiruvananthapuram). Siddha is a science of holistic health emphasising both drug and diet for human health care.