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Indian subcontinent

The earliest written account of elaborate codes of hygiene can be found in several Hindu texts, such as the Manusmriti and the Vishnu Purana. Bathing is one of the five nitya karmas (daily duties) in Hinduism, and not performing it leads to sin, according to some scriptures.

Ayurveda is a system of medicine developed in ancient times that is still practiced in India, mostly combined with conventional Western medicine. Contemporary Ayurveda stresses a sattvic diet and good digestion and excretion. Hygiene measures include oil pulling, and tongue scraping. Detoxification also plays an important role.