Dr Harris was born in 1930. He is a pilot, trampoline exponent and long term nutritional advocate. He died in 2015 at the age of 84 – still very active until the time of his death.
He was a resident of Hawaii since 1964 where he worked as an emergency and urgent care doctor. He was the Director of the Kaiser Permanente Vegetarian Lifestyle Clinic in Honolulu where he taught the benefits of a whole-food plant-based diet.
He became a vegetarian in 1950 and a vegan in 1964. As well as being an advocate for plant-based nutrition, he was a passionate activist for animal welfare.
His book The Scientific Basis of Vegetarianism is a landmark study in nutrition. It can be read at his website.