Your making the assumption that because one guy is skinny he is healthier than the other. The 2nd picture (Darker Skinned) is a Maasai Warrior and the other are Mascho Piro. They will probably have different diets and do differencing amounts of exercise daily, but just because one is thin and one is not as thin, doesn't say anything about health.
Both look healthy to me ;) The problem is that since we do not have the means to conduct the scientific experiments ourselves we rely on experts and public agencies. Hard to tell if either is working unbiased. So, in lack of certainty and trust, I rather just eat as my grandparents did. So far so good!
