About

People on these medications lose muscle, and are not told.

GLP-1 medication is the most effective weight-loss treatment most people will ever be offered. It also takes lean tissue with the fat — in the published trials, commonly a quarter to two fifths of the total lost. That number rarely comes up in a ten-minute appointment, and it is almost never on the leaflet.

ForgeFit exists to close that gap. Not to argue against the medication — it works — but to make sure the person taking it knows what else is happening, in numbers specific to them, early enough to act.

What we do
Estimate how much of your loss is likely lean tissue.Show the protein target that protects it, at your weight.Explain what the published trials found, in plain English.Show our maths and name our sources, every time.
What we do not do
Give medical advice, or tell you to change a dose.Diagnose anything, or replace a scan or a blood test.Sell medication, supplements or a programme.Ask you to sign in, or send your answers anywhere.

The short version: we don't give medical advice, we give you your numbers. What to do about them is a conversation with the person who prescribed your medication.

Who checks this
We are recruiting a reviewer.

Until a registered dietitian has agreed to review this site, there is no name here — putting an invented one would be the exact thing this page exists to rule out. Nothing published so far makes a clinical claim: the calculator states its formula and its sources on the page, and says plainly that it estimates rather than measures.

If you are an RD or RDN working with people on GLP-1 medication and this is something you would want your name on, write to hello@forgefitai.com.

The company
Who is behind this

ForgeFit is run by one person, not a company — there is no registered entity to name yet, and we would rather say that than imply one. If that changes, the details will appear here.

Contact
General — hello@forgefitai.com
Corrections — corrections@forgefitai.com
Replies within two working days