| Overeating does contribute, of course. I do think there are, again, many other confounding factors. Environment and diabetes are closely linked. Incidence of Type 1 Diabetes, for example, has increased five-fold in the past 50 years or so. As well as many other weird epigenetic diseases that seem to be linked to genes + our modern world somehow. Off the top of my head, the super low rates of pre-modernity T2D could also be linked to: - no antibiotics, which destroy huge swathes of gut bacteria - very different, less sanitized environment - far more time outdoors, sunlight, dirt, etc. - fewer strong chemical soaps, antiseptics, etc. - different diet, fewer processed foods - different gut flora due to all of the above - different physical lifestyle, more movement, etc. - diagnosis criteria Yes, being fat is a big problem for many reasons, but it is quite far from the only problem, and may even not be the causal problem. Just closely linked to some of the above. Sorry for being rash, I get testy when people hint at the diabetic = fat equivalence, for obvious reasons. |