“So, what is a stroke? In about 90 per cent of strokes, it's the result of blood flow to part of the brain getting cut off, depriving it of oxygen and killing off the part fed by the clogged artery.”

American physician, author, and public health speaker

Michael Herschel Greger is an American physician, author, and public health speaker known for his advocacy of a whole-food, plant-based diet and his criticism of animal-derived food products. He has built a large audience around nutrition, health, and preventive medicine. He founded NutritionFacts.org, a site that shares videos and research on diet and nutrition. He is also the author of How Not to Die, How Not to Diet, and How Not to Age, all of which became New York Times best sellers.