I had to look up heterogeneity:



So obesity is due to a diverse set of circumstances?

Well, let's see - there's being female:

Biologically speaking, the female body is designed to reproduce. In order to effectively be a fertile female who can maintain a pregnancy and nurture a baby through infancy, you need to be able to maintain enough fat stores to nurture a baby from conception through birth, plus you need enough extra energy stored up to nurture (breastfeed) that baby through infancy - even during times of famine.

Survival of the fittest - During a famine, the naturally waif thin woman would have been more likely to starve to death. If she didn't starve to death, she might have been less fertile. If she got pregnant, more likely to have a miscarriage due to the baby simply not getting enough nutrients. If the pregnancy made it to term, the baby would likely have been smaller, and she would would have had a more difficult time providing enough milk for the baby to survive infancy.

The female who gains and retains weight more easily - they're more likely to make it through that famine, produce a healthy infant, and be able to provide enough milk for that infant to hopefully wait out the famine.

But then you also have women whose bodies have decided that surely she's always on the verge of pregnancy and major famine at the same time - so the body does everything it can to pack on as much weight as possible, and holds onto that fat fiercely in spite of any and all interventions.


That's before you get into food availability that is geared towards naturally carby foods that are more readily stored for the winter, and converted to glucose to be stored in the body as fats. A few men also enter the picture of becoming overweight at this point, simply because of the amount of carbs consumed.


And that went on for thousands of years before ever getting to the last 40-some years where everyone was told to cut down on dietary fats and meat, eat more starches, grains, beans, and fruit, leading to more obesity - not just women, but also many more men.

Which was before highly addictive refined carb based UPF foods became the primary source of calories for the vast majority of the population.

Now it's easy even for men to fall into storing up as much as possible for the potential famine because the grocery stores, restaurants, convenience stores, and vending machines are full of addictive UPFs.

Unfortunately, I don't think most people who are addicted to UPFs have any idea that's what's going on - oh they might say "I just can't give up bread" or "I can't turn down chocolate chip cookies", but they don't equate it with the term addiction because they're not seeing as a chemical dependency (such as with heroin, alcohol, or nicotine).

So they're very willing to accept the current explanation that obesity is a disease that needs to be treated medically. And if the GLP-1 medication doesn't work, then medical science will soon come up with a new drug treatment to help them.