[radiofreeeuropa]

Run a study of your approach and show good results over a cohort for 2+ years and you'll make an entire sub-field of medical scientists very happy.

[EDIT] It's not that your approach can't work, it's that if (for example) people had as hard a time following the directions for condoms as they do following diet & workout plans, we'd never allow condoms to be sold as contraceptives, they'd not even be close to being OK to promote as useful for that purpose. It wouldn't matter if a few people could follow the directions and it worked 100% of the time for them.

[liveoneggs]

87% of people in this study reversed t2d or prediabetes with diet and exercise: https://bmcmedicine.biomedcentral.com/articles/10.1186/s1291...

[radiofreeeuropa]

... and drugs.

And they had 86% adherence for a year. If they'd studied this farther out and it went the same way as basically any study that's done that, adherence would be a lot worse in another couple years. And that's in a group that's exceptionally motivated vs. the general population—has an actual illness they're trying to treat, and has opted in to the study knowing what it's asking of them and for how long.