Hello and welcome to another edition of The Weekly Dose!

You're doing everything right — you're losing weight, feeling better, and staying consistent on your GLP-1 journey. Then one morning you look at your shower drain or your hairbrush and your heart sinks a little. More hair than usual. Maybe a lot more. And the first thought that rushes in is: Is my medication doing this? You're not alone in that fear — hair loss is one of the most emotionally charged side effects that GLP-1 users ask about, and it deserves a real, honest answer. This week, we're breaking down exactly what's happening, why the cause might surprise you, and the step-by-step plan to get ahead of it.

💡 Let's dive in!

📌 Here's what's inside this issue:
✅ Main Topic: How to Handle Hair Loss on GLP-1s — A 5-Step Action Plan
✅ Research Recap: A New Diabetes Pill That Burns Fat Without Muscle Loss
✅ Question of the Week: Have You Noticed Hair Loss on Your GLP-1 Journey?
✅ Community Reminder: The Weekly Dose Skool Community Is LIVE!

💊 Still looking for a GLP-1 provider? If you haven't started yet — or you're exploring better options — Sprout Health makes it simple. Take a quick 2-minute quiz to see if you qualify for a GLP-1 program built around your goals.

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A 2024 disproportionality analysis of FDA adverse event (FAERS) data found that hair loss was reported approximately 2.46 times more often among semaglutide users compared to background reporting rates — a meaningful pharmacovigilance signal, but more modest than some headlines suggest. (Source: PMC systematic review of GLP-1 alopecia reports) But here's the crucial detail that rarely makes the headline: most researchers believe the medication itself is not the primary cause. What's actually happening is far more interesting — and far more manageable — than most people realize.

It is fundamentally tempting to connect two things that happen at the same time. You start a GLP-1, you notice hair loss a few months later, and the math seems obvious. But research suggests the real culprit is rapid weight loss itself — not the mechanism of the drug. This distinction matters enormously, because it changes everything about how you respond to it. The hair shedding you're experiencing has a name, a clear biological explanation, and — crucially — an endpoint.

The condition driving most GLP-1-related hair loss is called telogen effluvium. Here's the plain-language version: your hair grows in cycles. There's an active growth phase (anagen), a transition phase (catagen), and a resting phase (telogen) — at the end of which the hair sheds. Under normal conditions, roughly 10% of your hair is in the resting phase at any given time.

When your body goes through a significant physical stressor — rapid weight loss, major surgery, illness, or extreme caloric restriction — it essentially hits the pause button on non-essential functions. Hair growth is considered non-essential. So a large chunk of follicles shift into the resting phase all at once. Then, roughly two to four months later, all that resting hair sheds at the same time. That's the clump in the drain. That's the extra hair on the brush.

Here's the reassuring part: this is temporary. Because telogen effluvium is a response to a past stressor, not an ongoing process, hair typically begins regrowing three to six months after the shedding starts. Most people see notable improvement within six to nine months. You are not going bald. Your follicles are very much still alive — they're just catching up.

This is arguably the most impactful step you can take, and it's where most GLP-1 users have a meaningful gap. When appetite suppression is strong — which is one of the things GLP-1 medications do remarkably well — it becomes genuinely easy to eat too little protein without realizing it.

Why does that matter for hair? Hair is essentially made of protein. Keratin, the structural protein that forms each strand, requires adequate dietary protein to be produced. When your intake falls short, your body has to prioritize protein for critical functions — like organ tissue, immune function, and muscle repair — and hair production gets deprioritized.

The target: most nutrition experts recommend GLP-1 users aim for at least 0.7 to 1.0 grams of protein per pound of body weight daily. For someone who weighs 200 pounds, that's 140 to 200 grams. That's a number worth tracking — at least for a few weeks — because most people are surprised by how far under they fall when appetite is suppressed. A free app like Cronometer or MyFitnessPal makes this genuinely easy to monitor.

Practical tip: anchor your meals around protein first, before anything else hits your plate. Eggs, Greek yogurt, cottage cheese, chicken, lean beef, fish, and protein shakes are all solid options that tend to go down easier on days when appetite is low.

Beyond protein, several specific micronutrients play a direct role in hair follicle health — and deficiencies in any of them can amplify shedding. Here's what's worth discussing with your doctor:

Biotin (Vitamin B7): Biotin is probably the most talked-about supplement for hair loss, and for good reason. It plays a key role in keratin production. While severe biotin deficiency is rare, sub-optimal levels are more common than most people think — especially in people eating less food overall. A standard dose of 2,500 to 5,000 mcg daily is generally well tolerated. Note: high-dose biotin can interfere with certain lab tests, so let your provider know if you're supplementing.

Iron: Iron deficiency — even without full anemia — is one of the most well-documented nutritional contributors to hair loss, particularly in women. GLP-1 users eating less red meat may be at higher risk. Ask your doctor to check your ferritin levels (not just hemoglobin), as ferritin is a more sensitive indicator of iron stores.

Zinc: Zinc is essential for protein synthesis and cell division — both of which are directly involved in hair growth. Low zinc levels have been linked to telogen effluvium in multiple studies. Foods rich in zinc include oysters, beef, pumpkin seeds, and lentils. A supplement providing 15 to 30 mg daily is a reasonable starting point if dietary intake is low.

Vitamin D: Vitamin D receptors are found in hair follicles, and low vitamin D levels have been associated with various forms of hair loss. This is one of the most common deficiencies in the general population — and worth checking with a simple blood test if you haven't done so recently.

I personally like taking Thorne supplements for my GLP-1 journey, try them out here.

💊 Navigating hair changes while on your GLP-1? A licensed provider who understands both GLP-1 side effects and hair health can make a real difference. Sprout Health connects you with clinicians who get it — and it starts with a 2-minute quiz.

👉 Find Your Provider → Take the Quiz

While you're working on nutrition from the inside, it's equally worth reducing the physical stress you're placing on your hair from the outside. Follicles that are already cycling through a stressful period don't need additional insults.

Washing: Switch to a gentle, sulfate-free shampoo. Wash hair two to three times per week rather than daily — excessive washing strips protective oils and can increase breakage. When you do wash, handle wet hair carefully; it's at its most fragile when saturated.

Heat: This is a meaningful one. Blow dryers, flat irons, and curling wands all cause cumulative damage to the hair shaft. If you can air-dry regularly, do it. If you use heat tools, apply a heat protectant spray first and keep temperatures moderate rather than cranked to maximum.

Tension: Tight ponytails, buns, and braids place mechanical stress on follicles — especially along the hairline. Give your hair a break from high-tension styles while it's in a vulnerable phase.

Scalp health: A healthy scalp is a healthy foundation. Consider a gentle scalp massage for a few minutes a few times per week — it increases circulation to the follicles and is a surprisingly enjoyable three-minute habit to build in.

For most GLP-1 users, the steps above will be enough. Optimize protein, address nutritional gaps, reduce physical stress on your hair, and wait out the telogen effluvium cycle. But there are situations where it makes sense to bring in a specialist.

Consider seeing a dermatologist if:

A dermatologist can perform a more thorough assessment — including a trichoscopy (a magnified look at the scalp and follicles) — and can prescribe treatments like minoxidil (Rogaine), which has strong clinical evidence for promoting regrowth in both men and women. Topical minoxidil is available over the counter, while oral minoxidil is prescription-only but increasingly common.

A telehealth provider who specializes in GLP-1 care can often evaluate hair loss concerns remotely and discuss prescription options without a full in-office visit — a convenient middle step before a formal dermatology referral.

Most cases of GLP-1-related hair shedding resolve on their own within six to nine months. But here's what to watch for as a signal that something else may be going on:

The key is not to panic at month two, but also not to wait indefinitely if things aren't improving. Six months is a reasonable window to assess whether you're on the right track without intervention.

Here's the essential three-step action sequence — starting today:

1. Track your protein for one week. Use a free app like Cronometer or MyFitnessPal and find out where you actually stand versus your target. This single step is where most GLP-1 users find the biggest gap.

2. Ask your doctor to run a micronutrient panel. Request ferritin (iron stores), vitamin D, and zinc at your next visit. Knowing your actual levels — not just assuming — lets you supplement with precision rather than guesswork.

3. Give it time with intention. Telogen effluvium is a response to something that already happened. With the right nutritional foundation in place, the regrowth process is underway whether you can see it yet or not. Six months of consistent action is the fair window to evaluate.

The most important single action? Hit your protein target every day. Everything else layers on top of that foundation. Protein is the most impactful lever you have right now — notably more so than any shampoo, serum, or supplement on the market.

Hair loss and other side effects are manageable — especially when you have a provider in your corner who actually understands GLP-1 medications. Sprout Health matches you with licensed clinicians who specialize in this space, and getting started takes less than 2 minutes.

👉 Get Your Personalized GLP-1 Plan → Start Here

A research team at the Karolinska Institutet recently published findings in the journal Cell that are turning heads in the metabolic health world. Their new compound — a β2 agonist pill — takes a fundamentally different approach to fat loss than GLP-1 medications, and the early results are genuinely exciting.

✔️ It targets skeletal muscle, not appetite. Rather than suppressing hunger, this pill activates metabolic activity directly in muscle tissue — causing the body to burn more fat for energy without reducing how much you eat.

✔️ It preserved muscle mass in trials. This is notable because one of the most significant concerns with GLP-1 medications is lean muscle loss during rapid weight loss. The new compound appears to burn fat while sparing muscle — a combination that would address one of the key limitations of current GLP-1 therapy.

✔️ Early human trials showed it was safe. Phase I trials with 48 healthy volunteers and 25 diabetic patients found the pill was well tolerated, with no serious adverse events reported. That's a promising early signal, though it's still early-stage research.

For people already on GLP-1 medications like Mounjaro, Wegovy, or Ozempic, this research is worth following closely. The compound could potentially be used alongside GLP-1 therapy — adding a muscle-preserving, fat-burning effect on top of the appetite suppression GLP-1s already provide. Think of it as a potential complement rather than a replacement. We're likely still years from broad availability, but the science behind it is the real deal.

Read it here: https://www.sciencedaily.com/releases/2026/06/260603015541.htm

Have you noticed hair loss since starting your GLP-1 medication?

📣 That's a Wrap!

If this issue hit close to home — or if you have a friend or family member who's been quietly stressed about hair changes on their GLP-1 journey — please forward it their way. Sometimes knowing why something is happening, and that it's temporary, is the most empowering thing someone can hear.

Hit reply and tell me: are you dealing with hair loss, and which step from today's issue are you starting with first? I read every reply and genuinely love hearing from you.

See you next week — and in the meantime, keep showing up. 💪

P.S. If you're navigating your GLP-1 journey solo, you don't have to. The Weekly Dose Skool community is full of real people sharing wins, asking questions, and keeping each other accountable. Come join us: https://www.skool.com/the-weekly-dose-8554/about

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