In 1908, Metchnikov wrote in his book "The extension of life" that the secret of longevity found in the Russian Caucasus Mountains was Kefir. Kefir is actually cultured milk that people made and consumed. The villagers of the Caucasus Mountains gave us the Caucasian yoghurt and kefir (milk fermentation product). Kefir history goes back several centuries. It is widely known in Eastern Europe and the old Pontus Area. People in the Caucasus Mountains drink kefir instead of water and also eat dense kefir cream as a dessert. Caucasian Mountain people do not suffer from the degenerative diseases of modern western society people and their estimated lifespan exceeds 110 years. Their longevity is actually because of kefir consumption.
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