Kaya Kalpa Chikitsa is primarily used as a rejuvenation therapy to slow down the aging process, improve overall health and vitality, and promote longevity. It is not specifically used to treat any particular disease or health condition. However, the therapy may help improve digestion and metabolism, boost the immune system, reduce stress and anxiety, and enhance mental clarity and memory. It can also improve the functioning of the organs and tissues in the body, leading to better overall health and well-being.