> If there was a safe, easy to take and effective vaccine against obesity, but they refused to take it, they would be condemned much more.

Seriously? What about the good ol' "eat less" (excluding the rare cases where it is related to metabolism disorders)?

In what world is "eat less" as easy or effective as getting a shot?

Losing weight is quite hard and keeping it off is next to impossible, given that very few succeed.

In case you're serious, you can read this. https://slimemoldtimemold.com/2021/07/11/a-chemical-hunger-p...

Vaccination is used for prevention. Eating less is also prevention (or would you rather prefer "not eating a lot"?)... from getting obese. Once you are obese, eating less also could serve as a treatment; you lose weight.

Maybe, but it's not easy at all unlike getting a vaccine. Otherwise we wouldn't be seeing a global epidemic of obesity. One has to eat less for a very long amount of time.

Are obese people starting off as obese though? I would think that they have to eat a lot to become obese to begin with, which suggests that eating less prevents one from getting obese[1].

Eating less is both prevention and treatment.

[1] Excluding metabolic disorders