“I Owe You an Apology.” A Doctor's Open Letter to Every Woman Who Lost Her Hair After GLP-1
and the 2-gummy daily ritual I built to put back exactly what the shot stripped out (no minoxidil, no powders, no prescriptions)
I need to say something that no doctor is supposed to say.
I'm sorry.
For 15 years, I sat across the desk from women who were losing their hair, and their confidence, and the feeling of recognizing themselves in the mirror, and I gave them the same answers everyone else gives.
“It's probably stress.”
“Try biotin.”
“Some thinning is normal as you get older.”
“Give it time, it usually grows back.”
These weren't lies. But they weren't the truth either.
They were the safe answers. The convenient answers. The answers that kept me inside the lines of “standard advice” while women kept losing hair, kept spending money, and kept coming back to me with thinner ponytails and a look in their eyes I'll never forget.
The look that says: I trusted you. And nothing changed.
I owe you an apology. Not for what I told you. For what I never asked.
If you're reading this with your hair pulled back in that same ponytail that keeps getting smaller… if you've started avoiding mirrors in bright light… if you finally lost the weight you fought for years to lose, and somehow that victory came with handfuls of hair in the shower drain.
The next 10 minutes could change how you think about all of it.
My name is Dr. Imani Harper. And I'm about to tell you the one question I should have been asking for 15 years, but didn't.
But first, let me tell you about the patient who finally forced me to ask it.
The Patient Who Broke Me
I'll call her Diane.
She came to me about a year after starting a GLP-1 medication for her weight. And the weight loss had worked, beautifully. She'd lost over 40 pounds. She showed me a photo from her daughter's wedding, the first time in over a decade she'd felt good in a dress.
Then she set a second photo on my desk. A close-up of her part line.
“Dr. Imani Harper,” she said. “I finally did the hard thing. I got healthy. So why is my hair falling out like I'm sick?”
I gave her my standard answer. Rapid weight loss can trigger temporary shedding. It usually settles. Try a biotin supplement. Give it time.
She'd already tried biotin. And a collagen powder. And a hair serum from the pharmacy. Months had gone by. The shedding hadn't settled. Her part kept widening.
And then she said the thing that broke something in me:
“Everyone keeps telling me it's worth it. That the weight matters more than the hair. But nobody asked if I should have to choose.”
She was right. And the fact that I couldn't actually explain why her hair was falling out, after 15 years and a wall full of credentials, didn't just embarrass me.
It shamed me.
Because I realized I'd been doing what I was trained to do: manage the symptom, reassure the patient, and never once ask the deeper question.
Why does this happen to so many women after rapid weight loss, and why doesn't “wait and see” fix it?
That night, I made Diane a promise. Give me six months. I'm going to figure out what's actually happening.
What I Discovered When I Finally Asked the Right Question
For the next six months, I read everything I could find on hair loss during rapid weight loss and calorie restriction. Not the marketing. The actual research, on metabolism, on the cellular biology of the follicle, on what happens to the body when you lose weight fast.
And what I found was almost embarrassingly simple. Not complicated. Obvious, once you ask the right question.
For 15 years I'd treated hair as a surface problem. Something happening on the scalp. But hair loss after rapid weight loss doesn't start on the scalp.
It starts inside the cell.
Here's what I should have understood all along:
Every hair follicle on your head is one of the most energy-hungry structures in your entire body. Growing hair is metabolically expensive. And that energy, the fuel that powers active hair growth, is made inside your cells, by your mitochondria, in the form of a molecule called ATP.
But mitochondria can't make ATP out of nothing. They need a critical helper molecule called NAD.
NAD is the spark. Without enough of it, your mitochondria can't turn food into the energy your follicles run on.
And here's the part nobody had told Diane, or me:
When you lose weight rapidly, your NAD levels drop.
By the time we reach our 40s, NAD is already a fraction of what it was in our twenties. Then you cut your calories dramatically, eating a third of what you used to, and your body, sensing scarcity, makes a brutal triage decision. It pulls energy and raw materials away from everything “non-essential” to protect your heart, your brain, your organs.
Your hair is at the very bottom of that priority list.
So your follicles don't get the NAD they need. ATP production stalls. And without the energy to sustain active growth, the follicle does the only thing it can do to conserve resources:
It powers down. It stops producing hair. It goes quiet.
It Doesn't Die. It Goes to Sleep.
This is the single most important thing I learned in those six months. It's the thing I wish I'd told Diane the very first day.
Your follicles aren't dead. They're dormant.
There's a world of difference between those two words, and the entire hair-loss industry has let women believe the wrong one.
“Dead” means gone. Over. Mourn it and move on to wigs.
“Dormant” means asleep. Waiting. Still there, just powered down because the energy that ran them collapsed when your weight dropped.
A dead follicle can't be brought back. A dormant one can, if you give it back the two things rapid weight loss took away: the cellular energy to wake up, and the raw materials to rebuild.
That's the whole game. That's what 15 years of biotin and “give it time” completely missed.
The Treatments We've Recommended for Years, and Why Each One Fails GLP-1 Hair Loss
Let me guess. You've already spent hundreds, maybe more, on solutions that didn't work. Let me tell you exactly why each one missed.
Biotin & standard hair vitamins
What it does: Supplies one nutrient your body may or may not be short on.
Why it fails here: A single vitamin can't restore the NAD your follicles lost or replace the protein your reduced intake stopped delivering. It's aimed at a deficiency you probably don't even have.
Minoxidil (Rogaine / oral)
What it does: Forces more blood flow to the scalp.
Why it fails here: Blood flow was never the problem. GLP-1 shedding is a cellular-energy problem. And many women don't want a lifelong topical, or the racing heart some report on the oral version their derm suggests.
Collagen powders
What it does: Gives you building-block protein, half the equation.
Why it fails here: Building blocks are useless to a follicle that has no energy to use them. Plus a scoop to choke down every morning that most women quietly abandon.
Transplants, PRP, toppers & wigs
What they do: Move, stimulate, or cover.
Why they fail here: They're expensive ways to manage or hide a problem whose actual cause, depleted NAD and protein, is still sitting there untouched.
Every one of them treats the surface. None of them refuels the cell. That's why you can do “everything right” and still watch your part get wider.
The First Test Subject: Me
Here's what nobody tells you about being a doctor: we get the same problems as everyone else.
I wasn't on a GLP-1. But I was in my late 40s, my own NAD was already declining with age, and after a stressful, low-appetite stretch of life, my hair was thinner than it had ever been. Widening part. More hair on the pillow than I wanted to count.
So I became my own first test subject.
Instead of another topical, I went after the actual cause from the inside. I built a simple daily formula around the two things the research kept pointing to: an NAD precursor to restore the cellular energy, and clinical-dose collagen peptides to supply the raw protein. Plus supporting nutrients that the science backed.
Two gummies a day. That was the whole protocol.
Here's what happened over the following months:
I'd spent 15 years treating the surface. And the first time I went after the cause, I saw what I'd been missing the whole time.
I Started Sharing It With My Most Frustrated Patients
Diane was first. Remember her, the woman who asked why she had to choose?
I gave her the formula and told her to give it the full cycle. Weeks later she came back, wearing her hair down.
“My daughter told me my hair looks like it did before all this started,” she said. “I didn't have to choose after all.”
Vanessa, 32, Palm Spring ★★★★★
Melissa, 47, Chicago ★★★★★
Word spread. And that's when I realized this was bigger than my own practice, and that's also when I understood why no one had handed women this answer sooner.
Why an Answer This Simple Stays Buried
I want to be honest with you about something, and I want to be just as honest that this next part is my opinion, formed from 15 years inside this field, not a courtroom allegation.
Hair loss is a multi-billion-dollar industry. And here's the uncomfortable structure of it: the industry makes the most money when you need a product forever.
A topical you have to use every day for life. A supplement you reorder every month. A procedure you repeat every few years. Recurring revenue depends on managing the symptom, not resolving the cause.
Now consider an approach built on restoring NAD and protein from the inside. The core ideas come from nutrition science and cellular biology. You can't patent a vitamin precursor or collagen the way you can patent a drug. No patent means thin profit margins, which means very little incentive to fund the studies, run the ads, or train doctors to recommend it.
So it doesn't get pushed. It's not that there's a villain in a boardroom plotting against your hair. It's something quieter and, honestly, worse: an entire system whose incentives simply don't reward telling you the simplest version of the truth.
I'll be candid, I didn't expect going public with this to make me popular with everyone in my profession. Telling women the standard playbook misses the cause for GLP-1 hair loss isn't a comfortable thing to say out loud when so much of the field is built around that playbook. I expected pushback. I've gotten some.
But I made Diane a promise. And I'd rather keep it than stay comfortable.
Introducing Aesun NAD + Collagen
I partnered with a manufacturer that agreed to make the formula exactly as I designed it, at honest, clinical doses, with full transparency about what's inside. No proprietary “black box” blends. No water-and-filler products with a sprinkle of actives just to put them on the label.
We called it Aesun.
It's built on a simple two-part idea, because rapid weight loss causes a two-part problem:
One restores the energy. The other restores the building blocks. Together, they give a dormant follicle what it actually needs to wake back up.
Two gummies a day. No powders. No pills to choke down. No prescription. No third bottle in your supplement drawer.
See the Offer & Guarantee →What's Actually in Every Bottle
Let me show you exactly what's in it, and why each one earns its place:
✓ NAD Precursor (NMN / NR), the studied building block your body converts to NAD, to help restore the cellular energy that powers follicles.
✓ Hydrolyzed Collagen Peptides (Type I & III), at a meaningful dose, supplying the structural protein hair is built from.
✓ Hyaluronic Acid, supports hydration and skin/scalp environment.
✓ Resveratrol, an antioxidant studied alongside NAD-supporting pathways.
Real Women, Real Stories
Kelly M., 56, Charlotte, NC ★★★★★
Customer before and after, part
Jessia T., 43, Austin, TX ★★★★★
Customer before and after, hairline
Mandy L., 38, Denver, CO ★★★★★
The Offer
Here's my thinking on price. I want women to actually try this, not stare at it in a cart wondering if it's another expensive disappointment.
Regular price $89/bottle
[best value on the multi-month supply]
90-Day Guarantee, Start TodayMy 90-Day “Thicker Hair” Guarantee
Hair grows on its own schedule, so I want you to give this a fair, full cycle. Take it every day. If you don't see and feel a difference in your hair, send back the bottle, even an empty one, and we'll refund you. The risk is mine, not yours.
Because this was never really about selling another product. It was about keeping a promise I made to one patient, and to every woman who was told she had to choose between her health and her hair.
You don't.
90-Day Guarantee, Start Today