Hair is considered a by-product (waste product) of certain kinds of tissues, according to Ayurveda. This tissue known as asthi is found in bones, nails and hair. Any disruption in the natural metabolism of asthi can lead to hair fall. Out of the three doshas, pitta dosha is the main cause of hair fall. Ayurveda also considers digestive health and lifestyle habits to have a major impact on hair fall, Ayurveda calls this khalitya