[cthalupa]

This is such an absurd statement.

If changing your habits was much easier then we wouldn't need these medications and the world wouldn't keep getting fatter. People have known how to not be fat for a long time, yet the obesity rate has been rising worldwide, even in countries that have traditionally been skinny.

It's not like fat people on the whole are ignorant of how to become not-fat and never attempt to do so.

[tirant]

Because people are choosing deliberately to get pleasure to eat unhealthy stuff instead of being healthy. And that’s a reasonable thing to do. Immediate pleasure trumps future hypothetical gains.

And it’s exactly the same situation with financial education, debt, university degrees, or in general any long term endeavors that requires the sacrifice of the immediate pleasure.

Of course, we still have a non trivial percentage of people that suffer from eating disorders, and use food as a way to emotionally regulate themselves because that’s what they learned as children (child is unhappy, give him a candy…).

[cthalupa]

None of which addresses the point. Combating all of those urges and changing your habits via willpower is still far more difficult than a weekly injection that provides huge help in combating said urges.