as much as it is the environment with its endocrine disrupting chemicals that are causing issues. There was a documentary on CBC (Canadian Broadcasting corp) about this. It had how babies are being born bigger, even when controlling for the mother's weight in studies. The hypothesis is that there are an overabundance of endocrine disruptors in our environment and that is causing people to gain weight. The 2 scientists in the documentary noticed that even the tiniest amounts of endocrine disruptors in the rat's feed caused them to become super obese on the same amount of calories as the control group. It was a really compelling show (I haven't been able to find the show on youtube, just the promo - it's called "The Nature of Things" with David Suzuki "Programmed to be Fat"
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That said - our food supply has been altered. Even our vegetables are orders of magnitude sweeter than what our hunter/gatherer ancestors ate, with most of the breeding for sweetness happening in the last 100 years. Then there's all the processed crap we eat now, that tastes crappy, so our bodies crave more and more of it to get the same satiety. Add in HFCS, MSG and other additives that we don't really know WHAT they do.... Anyway, there are many factors, and I'd say 90% of them are not related to people being 'lazy'. I know what you mean about cruel-fat shamers here on DU. It's been really disappointing to see that here of all places.
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