by John Cryan, The Conversation Elie Metchnikoff was ahead of his time in recognizing the role of the gut microbiome on health and longevity. Credit: Gallica Digital Library/Wikimedia Commons In 1895, on turning 50, Elie Metchnikoff became increasingly anxious about aging. As a result, the Russian Nobel prize-winning scientist, and one of the founders of immunology, turned his...
