Modern tribes: the diet guru

I met 150-year-olds whose longevity can only be explained by the healing power of locally harvested lardAs a top scientist, I grew up believing in low-fat. Yes, for years I trusted the research, ate fruits and grains and shunned tempting doughnuts, in the firm belief this would keep my body strong. I even wrote books about it! But here’s the thing. Although I looked trim and healthy and – some say – fiendishly attractive on the outside, inside my organs were pallid and mis