Longevity in general (don't judge by today's fully Lidl-ized & Kaufland-ized diet of modern Bulgarians). The research dates back to the 19th century and Ilya Il

Longevity in general (don't judge by today's fully Lidl-ized & Kaufland-ized diet of modern Bulgarians). The research dates back to the 19th century and Ilya Ilyich Mechnikov [0]. [0]: https://en.wikipedia.org/wiki/%C3%89lie_Metchnikoff https://en.wikipedia.org/wiki/%C3%89lie_Metchnikoff