Only there have always been fat people
Some have been fatter than others, but only to a point and only in places and times where it was possible to eat to excess.
You do know that fat isn't a magic substance that appears out of nowhere, don't you? It is a product your body creates from *excess* calories it can't use for any useful purpose and stores the energy for later use in times of scarcity.
Obesity is the result of there being no time of scarcity for the people making the rest of us suffer from it.
We have paintings of obese people from 4000 years ago
No, we don't. Chubby, maybe, but not obese. In any case they were not the fucking norm as they are today due to the overabundance of food coupled with the entitlement and lack of self-control which are defining features of the obese.
It isn't basic physics.
Yes, it absofuckinglutely is.
Fat is created from excess calories and not from magic. Get all the piggies to admit that fact and then we can talk about tangential issues.
"What causes the cravings"
Irrelevant. What causes the fat to hang off you is eating too much food. That is the state of the argument. Overwhelming numbers of obese people are saying that that is not true and that their weight has zero to do with how much they eat.
This is why there is such a huge pushback against the wave of fat fucks clogging our medical system.
If you're one of the couple hundred people in the entire world who actually Prader-Willi syndrome, than that sucks but it still doesn't change the fact that extra adipose is caused by eating more food than you need.
If you do not have that condition, then you are a whining lying cunt.
If you were to force yourself to act like a human being instead of a pig, then you would be capable of resetting your hormones so your hunger pangs only trigger when you actually need food not when you've made a tiny bit of space that you've always crammed with more shit.
Act like an adult, not a whiny entitled fat fucking child.