Every treatment this site tracks works better on top of food and habits that hold — and one of them (GLP-1s) barely works without them. This hub is the foundation the rest of the site stands on.
GLP-1s suppress appetite; they don't choose what you eat. Under-eat protein on one and a chunk of what you lose is muscle. Stop one without habits in place and the weight tends to come back. So the diet content here isn't a side dish to the price index — it's the part that decides whether the money you spend on medication buys a result that lasts.
If you're weighing the medication route: the GLP-1 True-Cost Index tracks every legitimate channel's real monthly cost, the membership-fee tax explains why identical pills differ by $149/month, and Medicare's $50 Bridge copay may beat every cash price if you qualify.
Nothing on this page is medical or nutrition advice for your specific situation — that's what clinicians and registered dietitians are for.