The dietary impact on cholesterol in the blood is surprisingly low. Looking it up, this source says diet can affect 20-30% of your blood levels [1]. I don’t have a great statistic about exercise, but I’d encourage you to question what you think you know — at the very least I’ll claim you’re mistaken about the importance of dietary impacts on cholesterol, which perhaps should give you pause about your other beliefs
[1] https://my.clevelandclinic.org/health/articles/16867-cholest...
Fiber intake has a dose-dependent effect on cholesterol levels.
Obviously some people still need medication if they have particularly unfortunate genetics.
I was responding to the glp-1 question.
And yes, exercising and dieting absolutely reduces the need for these medications.
It also reduces the amount of people who have high cholesterol, although again, in both cases not all
Dietary cholesterol has little impact on blood cholesterol. However the post that started this debate mentioned mass loss. And that does have a decent correlation. Go from obese to not obese and the median person's cholesterol will drop quite a bit.