Diet can alter genetic expression. Change in genetic expression alters the way the body functions.
As far as disease goes there are some general pointers that suggest that our western excessive variation from the hunter gather early farmer type diet are responsibile at least in part for the increase in western diseases.
See posts on omega three six greek diet fructose etc.
I think it is important not to get too hung up on individual components.
I have just demolished a 100gram bar of 75% coco dark chocolate that would have usually lasted several days a square here and there. Do I feel better for it no. Did I enjoy it - yes.
RB
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