Diet & Nutrition

Diet first. Meds are tools.

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.

The worldview, in four sentences#

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.

What this hub covers#

Eating on a GLP-1 — week-one meals when appetite crashes, protein targets by body weight, managing nausea without abandoning nutrition.
Muscle preservation — resistance training plus protein while losing fast; why "skinny" isn't the goal your bloodwork cares about.
Foundations — protein, fiber, and satiety mechanics explained without influencer hype.
Coming off — what the maintenance transition looks like when medication stops or steps down.

How this content is built: on the primary literature. Per our editorial policy, every clinical claim in our health and nutrition guides cites peer-reviewed research — the citations sit at the bottom of each page, checkable, while the writing stays in plain English. Start here: Eating on a GLP-1.

Diet and the rest of your health

The problems people treat with medication share upstream drivers. These are the honest, cited versions.

What you eat and erectile functionErections are a circulation event, which is why the interventions that help arteries help here too. The trial evidence for diet is real, modest, and worth knowing before — or alongside — a $0.22 pill. What you eat and hair lossNutrition matters for hair — but almost entirely in one direction: correcting a real deficiency helps, and supplementing without one does nothing. Here's how to tell which situation you're in. What you eat and your skinMost diet-and-skin claims are folklore. One has a randomized controlled trial behind it, and it's about blood sugar rather than chocolate or grease. What you eat and how long you liveThe longevity market sells biomarkers. The interventions with actual mortality data behind them are unglamorous, unpatentable, and mostly free.

Meanwhile, the numbers side is live#

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.