Medical Weight Loss & GLP-1: a clinician’s guide to raising GLP-1 naturally, microdosing, and protecting muscle.

How to raise your own GLP-1 first

This is the part of the conversation that almost never happens before someone is handed a prescription, and in my experience it is where a great many people could have started.

GLP-1 is not a drug. It is a hormone your gut releases every time you eat, and how much you release depends heavily on what you eat and how you live. What we do in the clinic is work on that first, measure the result, and only then talk about medication.

Here is what actually raises it.

• Protein at the front of every meal. Protein is the strongest single stimulus for GLP-1 release. Eating it first, before the starch, produces a measurably different hormonal response from the same meal eaten in the opposite order.
• Soluble fibre, and plenty of it. When fibre reaches the lower small intestine and colon it triggers GLP-1 release directly. Oats, barley, legumes, chia, ground flax, psyllium. Most people eat a third of what they need.
• Short-chain fatty acids from fermentation. Your gut bacteria produce butyrate from fibre, and butyrate stimulates the same L-cells that release GLP-1. This is one of the more direct links between gut health and appetite regulation.
• Bitter foods and herbs. Bitter receptors in the gut trigger GLP-1 release. Rocket, radicchio, dandelion greens, gentian, berberine. This is old traditional practice with a modern mechanism underneath it.
• Walking after meals. Ten minutes. It improves glucose clearance and supports the incretin response, and it is free.
• Healthy fats, particularly olive oil and omega-3s. Fat slows gastric emptying and stimulates GLP-1 in its own right.
• Enough sleep. Short sleep raises ghrelin and lowers satiety signalling, which works directly against everything above.

What we have seen with patients is that a meaningful number who arrive convinced they need an injection do not, once these are genuinely in place and the metabolic drivers underneath — insulin, thyroid conversion, cortisol, iron — have been corrected. That is not a criticism of anyone who ends up needing medication. It is simply that this deserves a proper attempt first.

How GLP-1 medications actually work

GLP-1 is a hormone your gut already produces after eating. These medications are long-acting versions of a signal you already run on.

Glucagon-like peptide-1 is released by intestinal cells in response to food. It does several things at once: it slows gastric emptying so food stays in the stomach longer, it signals satiety in the hypothalamus, and it enhances glucose-dependent insulin release from the pancreas.

Semaglutide is a GLP-1 receptor agonist. Tirzepatide is a dual agonist, acting on both GLP-1 and GIP receptors, which is part of why it tends to produce greater weight loss in head-to-head comparison.

The subjective experience most patients describe is what is often called quieting of “food noise” — the constant background negotiation about eating simply stops. For someone who has spent decades fighting that, it can be genuinely transformative, and I do not want to understate how meaningful that is.

The problem nobody mentions at the point of sale

This is the part I care most about, and it is the reason we will not simply write a prescription and hand you an injection schedule.

All rapid weight loss costs some lean tissue. That is not unique to these medications. What is different here is the rate and the mechanism: appetite is suppressed profoundly, and when someone eats substantially less without deliberately protecting protein intake, the body takes what it needs from muscle.

Analyses of body composition in GLP-1 trials have found that lean mass can account for roughly a quarter to forty percent of total weight lost when no resistance training or protein strategy is in place.

Here is why that matters beyond aesthetics. Muscle is the largest glucose disposal site in your body. Lose it and your resting metabolic rate falls, your glucose disposal capacity falls, and your insulin resistance gets worse — which is the exact metabolic problem the medication was prescribed to address. You can arrive lighter and metabolically worse off.

And it compounds. If the weight returns after stopping — and the data says it very often does — it returns predominantly as fat. So the ratio of muscle to fat can end up worse than before you started.

If you do need medication, microdose it

When someone has genuinely done the work above and still needs help, my position is that the dose most people are put on is higher than it needs to be.

The standard titration schedule was designed around trial endpoints, not around preserving lean tissue. What I have seen clinically is that a meaningful number of patients get most of the appetite benefit at a fraction of the standard dose — with far fewer side effects and considerably less muscle loss.

Microdosing means starting lower and escalating only if genuinely needed, rather than following a fixed schedule upward regardless of response. The advantages are practical: appetite is suppressed enough to change habits but not so profoundly that hitting a protein target becomes impossible. Nausea and gastrointestinal side effects drop substantially. And because the deficit is more moderate, less of what comes off is lean tissue.

It also makes the exit easier. Someone who reached their goal on a small dose has a much shorter distance to taper than someone who spent a year at the maximum.

How we run it differently

Same medication, entirely different protocol around it. Four non-negotiables.

1. We work the metabolism up first. Fasting insulin, HOMA-IR, full thyroid panel, cortisol rhythm, sex hormones and hs-CRP. Sometimes that workup shows something correctable that changes the plan — and occasionally it shows someone does not need the medication at all.

2. A protein target, set and tracked. Typically 1.2 to 1.6 grams per kilogram of goal body weight, which is materially higher than most people eat. This is difficult on a medication that suppresses appetite, which is exactly why it needs to be planned rather than hoped for.

3. Resistance training, non-negotiable. Two to three sessions weekly, minimum. Protein supplies the material; training supplies the signal to keep it. Neither works properly without the other.

4. Body composition, not scale weight. We track lean mass and fat mass separately. The scale cannot tell you whether a good month or a bad one just happened, and on these medications that distinction is the whole ballgame.

What happens when you stop

The question every patient should ask before starting, and the one most rarely answered honestly.

Discontinuation studies have consistently shown substantial weight regain after stopping — in the region of two-thirds of lost weight within a year in some analyses. This is not a failure of willpower. It is what happens when you remove an appetite signal the body had adapted around.

Which leaves three honest positions. Some people will stay on a maintenance dose long term, and for some that is entirely reasonable. Some will taper slowly with the metabolic drivers corrected underneath, which is where the workup earns its place. And some will regain, which is a real outcome that should be discussed before starting rather than discovered afterwards.

What clearly improves the odds: muscle preserved through the losing phase, insulin genuinely corrected rather than only masked, and eating patterns established while appetite is suppressed so they persist when it returns.

The ten rules we run weight loss by

In order of how much each one determines whether you end up genuinely better off, rather than simply lighter.

What patients commonly experience under our care

When patients receive the proper guidance, here is what they commonly experience under our care.

• Week 1 — the food noise stops. Almost universally the first thing described, and for many people the most striking. The constant background negotiation about eating simply goes quiet.
• Weeks 2–6 — weight moves and side effects settle. Nausea is common early and usually eases with slower titration and smaller meals. This is where a protein target and training become essential rather than optional.
• Weeks 8–12 — the panel and the composition scan. Fasting insulin falling, HbA1c improving, hs-CRP down — and lean mass held. This is the checkpoint that tells us whether this is going well or quietly going wrong.
• Months 3–6 — the part that lasts. Strength maintained or improved, fat mass down, waist down. And the eating and training patterns established while appetite was suppressed, which is what determines what happens when the medication stops.

Before you reach for an injection, let us find out what is actually driving the weight. Schedule a consultation and my team will work up the metabolism, raise your own GLP-1 naturally, and only consider medication — microdosed and alongside a protein plan — if you genuinely still need it. You deserve to end up healthier, not just lighter.

Common questions