“Root cause of most obesity is an overabundance of food and lack of physical activity.”
The simplistic view you share with Michelle Soetoro, and one that, for many, erroneously assigns cause and effect to an observed correlation — beware that fallacy.
Per the article, which I assume you didn’t bother to read, different people have different metabolisms. Think about it. During lean times folks programmed to get fat easily are likely to be those most genetically fit. During times of plenty, like what we had before Soetoro became pResident, folks programmed to stay lean are likely to be those most genetically fit.
The human population appears to have evolved with a diversity that ensures survival in good times and bad.
Well that's pretty much what I'm saying. People's bodies are wired to gain weight very quickly and that's the problem. That's because we have an overabundance of food and our need to be physically active has greatly diminished.
Your gratuitous insult shows you to be a jerk and just negated anything your post might have been correct about.
Simply put, one's if one's caloric intake exceeds the consumption rate then one will put one weight and I don't care who shares that viewpoint.
Mankind has only had a few generations where lack of nutritious food wasn't the main enemy, and even that is not universal as much of the world still still struggles with food or dietary shortages and associated illnesses.
Look at TV from the 60's or 70's and see how slim the people were and that was because they didn't eat hugh portions and were more physically active. Simple enough for even you to understand it.