What is one important truth very few people agree with you on?
Positive body image as pertains to overweight people is not helpful. Sorry that this is harsh but bad outcomes await people who are overweight. Yes, someone can be in good shape while being overweight but the odds of everything (cancers, T2D, just about everything) go way up from carrying extra weight.
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Cutting carbohydrate and seed oil consumption can fix this VERY quickly for many people.