I'm doing that at my scale, helping friends and family with willpower and nutrition. So far I helped a dozen of people get control over their life's, including my father in law who lost 40kg and basically cured his health issues in less than a year. He could have taken ozempic but instead of that we taught him about the important of meal timing, how macro nutrients work, the effet of insulin/ghrelin on appetite, calorie counting, the benefits of walking an hour a day, &c.

100% free and he doesn't have to rely on a magic pill now that he understands what's going on.

When people are educated and motivated you can bring them wherever you want. Nutrition has to fit in the greater picture, if you're obese and addicted to shit food you most likely have much bigger problems in life, usually fixing the root causes unlocks the rest.