I agree. T. Colin Campbell does have some form of male pattern baldness, but he is in his 70s, hair thins eventually. Also, makes you wonder at what age he adopted a vegan diet. I don't recall after reading the book. His male pattern baldness doesn't look severe especially for someone in their 70s. Could male pattern baldness have been prevented even more had he started earlier in life? We don't know. Also I'm not seeing the male pattern baldness in his son, he has a healthy head of hair. I have the book with a pic of both of them on the cover and his hair looks great. As for every physician. We aren't discussing them. I'm only speaking about those that advocate a vegan whole foods diet.