
GLP-1 Weight Loss
Lose
fat, not muscle.
Lose fat while protecting the muscle you want to keep, clinically managed and tracked with DEXA so you can see exactly what is changing.
Most GLP-1 programs never measure. We know exactly how much of you is fat and how much is muscle before day one.
Rapid weight loss costs you muscle. Quarterly DEXA proves whether the weight coming off is fat, and we adjust if it is not.
Dosing, side effects and titration handled by clinicians who see your labs.
Nutrition, protein targets and training so the result holds when you come off.
What it is, what is included and what to expect, in one view.

GLP-1 medication can be a powerful tool for stubborn fat that has not moved with effort alone. At Prefusion it is always physician-managed and always measured.
Quarterly DEXA confirms the loss is fat.
Rapid weight loss can cost you muscle if it is not managed well, and the scale will never tell you the difference.
Pairing GLP-1 with DEXA means we can see your body composition change and protect the lean mass that keeps your metabolism strong.


1. Start with a DEXA and consult. We set your baseline and review whether GLP-1 is right for you.
2. Begin your managed plan. If it fits, a physician prescribes and manages your therapy.
3. Track with DEXA. Follow-up scans confirm you are losing fat and holding muscle.

Semaglutide and tirzepatide are FDA-approved and backed by large clinical trials.
DEXA tracking and dietitian support keep the loss fat, protecting the muscle that keeps your metabolism strong.
Reduces the deep abdominal fat linked to heart disease and insulin resistance, measured by DEXA.
The medication works on your hunger signals, so cravings stop running the show.
Improves insulin sensitivity and stabilizes blood sugar, benefits well beyond the scale.
Licensed providers adjust your plan every 90 days on your real data.
“Ten out of ten experience, super knowledgeable staff. I did the DEXA scan, RMR and VO2 max, then they sat me down and went through all of it, making sure I understood what my numbers meant and what to do next.”
“Bryan and the team have been consistently awesome to me and my friends. You get your raw scores, it is explained to you in person and on a handy app, and you leave with real recommendations on how to improve.”
“Ten out of ten experience, super knowledgeable staff. I did the DEXA scan, RMR and VO2 max, then they sat me down and went through all of it, making sure I understood what my numbers meant and what to do next.”
“Bryan and the team have been consistently awesome to me and my friends. You get your raw scores, it is explained to you in person and on a handy app, and you leave with real recommendations on how to improve.”
“Matt was an incredible consultant. The optimization package finally gave me something concrete and efficient to work with. It has done a full 360 for my plans going forward.”
“Training for a race, I came in for the optimization package. Between the DEXA scan, RMR and VO2 testing, I have full clarity on where my health is and what I need to improve.”
“Matt was an incredible consultant. The optimization package finally gave me something concrete and efficient to work with. It has done a full 360 for my plans going forward.”
“Training for a race, I came in for the optimization package. Between the DEXA scan, RMR and VO2 testing, I have full clarity on where my health is and what I need to improve.”
“I am a big numbers girl, so seeing the detailed data from my DEXA scan and VO2 max was super helpful for my running goals. They guided and supported me through the whole process.”
“Super comprehensive results, all the detail on the app and a clear explanation in person. We loved it so much we bought a 6-pack so we can track our health journey.”
“I am a big numbers girl, so seeing the detailed data from my DEXA scan and VO2 max was super helpful for my running goals. They guided and supported me through the whole process.”
“Super comprehensive results, all the detail on the app and a clear explanation in person. We loved it so much we bought a 6-pack so we can track our health journey.”
GLP-1 therapy is a medical weight loss treatment that uses FDA-approved medications to mimic a naturally occurring hormone in your body called glucagon-like peptide-1 (GLP-1). This hormone plays a critical role in regulating appetite, blood sugar levels, and how your body processes and stores fat.
At Prefusion Health in NYC, GLP-1 therapy goes beyond simply prescribing medication. Every program is physician-managed, data-driven, and built around your unique biology, with DEXA tracking so your fat loss is measured and your lean muscle is protected along the way.
Book your entry visit →
Your plan is built on a DEXA body composition scan and a full blood panel, so the program targets fat while preserving muscle, with long-term results in mind.
The medications we use, semaglutide and tirzepatide, are FDA-approved and backed by large clinical trials. Every prescription is physician-managed and written only when your labs support it.
Monthly clinical check-ins, follow-up DEXA scans and nutrition guidance, with your plan adjusted as your numbers change so you stay safe and on track throughout your weight loss journey.
The goal is not just to help you lose weight but to help you keep it off. Nutrition, protein targets and training are part of the program, so it fits into your wider health plan and supports your metabolic health.
Manhattan, Bellmore or Stony Brook. No account needed.
No payment needed to book.
Been here before? Use the same email and we'll find your account.
Optional. Your booking stands either way.
What to bring: metal-free athletic clothes and socks. Fast for 2 hours, skip exercise that day.
Need to change it? Call (516) 496-1717.
GLP-1 medical weight loss starts with data, not a prescription. Your entry visit is a consult with a provider, a DEXA scan and a full blood panel, so the plan is built on your numbers.
One visit covers the consult, your DEXA scan and the full blood panel. About an hour, at Manhattan, Bellmore or Stony Brook. You pay in person on the day.
You are booking the entry visit, not GLP-1 itself. Treatment is quoted after your consult, once we have your results.
Prefer to talk it through? Call (516) 496-1717