More than 2,000 years ago, texts from the Indian subcontinent described rebuilding a nose with a flap of skin from the cheek or forehead, along with removing kidney stones and cataracts. This episode explains the system behind them, Ayurveda, whose Sanskrit name means knowledge of life and longevity and which up to 80 percent of people in India and Nepal still use. It holds that the body and universe share five elements, earth, water, fire, air, and ether, which combine into three doshas: vata, pitta, and kapha. Health is the balance of a person’s own baseline, called prakriti, and treatment works by applying opposites.

Diagnosis relies on the practitioner’s senses, including tongue examination and nadi pariksha pulse reading, where a snake-like pulse signals vata, a frog-like one pitta, and a swan-like one kapha. About 90 percent of remedies are plant based, alongside daily routines and a sattvic diet. The episode then turns to the clash with modern medicine: the scientific establishment’s pseudoscience label, the lack of evidence that Ayurveda can cure diseases like cancer, and Rasashastra, the alchemical practice from around the 11th century of adding metals that modern tests have found contain dangerous levels of lead, mercury, and arsenic.

• How each dosha is said to shape body type, temperament, and typical ailments
• Agni, the digestive fire, and ama, the toxic residue said to clog the body
• The Sushruta Samhita and more than a hundred surgical instruments shaped like bird beaks
• Why surgery came to be seen as a last resort within the system
• The split between institutional Ayurveda in India and the spa-focused global version since the 1970s