>Furthermore, the curves that you present are way too steep. The average American puts on about 1 pound/year,
Because they’re already in their higher weight state. The graph was a hypothetical 1980 person being moved to 2010 and upping their intake. When we see studies putting people in metabolic wards we find that a 500 calorie a day surplus corresponds to a 1 lb a week weight gain, which is consistent with my curves
>There’s pretty strong evidence that the rise in obesity is not primarily behavioral
How are you defining behavioral? The body is pretty efficient at turning extra calories into weight, a disease can’t make you gain 20lbs by processing the food more. It can make you lose weight by processing the food less. The only mechanism a contaminant would have to raise your weight is by influencing your behavior so you spend less calories or intake more. There is no other mechanism by which a contaminant would work. It /must/ include an intermediate behavioral step
I agree getting told to eat less is not helpful advice. Here is the Facebook post, which I don’t think your steelman applies to.