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A study of 547,993 people on weight loss medications found a 62% higher chance of developing permanent hair loss by month six. There is a two minute quiz that tells you where you personally sit on that. I took it fourteen months too late. Because I spent those fourteen months doing the one thing everybody told me to do. Eating more protein. I fit the exact profile of those half a million women. And I came within a few months of the permanent kind, the kind that doesn't come back, while I was busy choking down shakes. If you are on one of these medications and someone has told you this is a protein problem, read this before you buy one more tub of anything. Let me back up. The year before this was the best year of my adult life. I'd fought the same fifty pounds for two decades. Every diet, every program, the shame of gaining it all back. Then I started the medication, and for the first time the weight just came off. Seventy-two pounds. My A1C from 7.1 to 5.3. Off metformin for the first time in eight years. I loved what I saw in the mirror again. Then, a few months in, I started to lose my hair. Not a little. Handfuls, in the shower, every single wash. My part got wider. The ponytail got lighter in my hand every week. Until one morning I could see my own scalp through my hair. It wasn't vanity. It was grief. I was watching a piece of myself disappear and I couldn't stop it. And every single person had the same answer. You're not eating enough protein. So I did what you're supposed to do. 130 grams a day. Measured. Tracked. Forced down with no appetite, because the medication kills your appetite and then someone tells you to eat like a bodybuilder. The collagen that made me gag every morning. The biotin. Fourteen months on the expensive supplement everyone in every group swears by. And it got worse. Not better. Bigger drain clogs. A wider part. A lighter ponytail every single week. "Eat more protein and give it time" was the single most dangerous advice I was ever given. Because for a lot of women, time is exactly what runs out. So I did the desperate thing. I quit the medication for six weeks, just to see if the shedding would stop. It didn't slow down at all. I gained fifteen pounds back and went right back on it. My doctor ran everything. Thyroid, iron, B12, protein. All normal. "Whatever you're doing is working," he said. I wanted to scream. That is when I stopped taking advice and started reading. Actual research, not blog posts. And I found it. Researchers at George Washington University, published in JAAD International, the peer-reviewed journal of the American Academy of Dermatology. They tracked over a million people. Half a million on the medication, half a million not. That's where the 62% came from. And the word permanent. My hands went cold. Because I had been giving it time for fourteen months. Then I dug deeper. And I found the fact that finally explained why the protein never mattered. It came straight out of the drugmaker's own trials. Women lost hair at roughly fourteen times the rate men did. Same drug. Same dose. Fourteen to one. And women lose weight slower on these drugs than men do. Not faster. Slower. So if it were the calorie deficit, if it were really about not eating enough, men should be losing more hair, not less. The number should be reversed. It isn't. It's fourteen to one, against us. It was never the food. Let me tell you what protein actually does, the way I wish someone had explained it to me on day one. Yes, it's a building block. Hair is mostly protein. That part is true, and it's why the advice sounds right. But it is one building block on a list. Your hair needs protein, iron, zinc, vitamin D, a few others. And your body pulls what it needs to build a strand before anything else gets a say. So being a little low on protein doesn't make your hair fall out. It changes the texture. Drier. More brittle. Rougher than it used to feel. That is what not enough protein actually looks like. Hair that comes in a little worse. Not hair that lets go. And what was in my drain wasn't dry or brittle. It was healthy hair. Falling for no reason I could see. Fourteen months of shakes was never going to touch it. Because your hair is only ever doing one of two things. It's growing, or it's shedding out. Dermatologists call those anagen and telogen, but forget the words. Growing, or shedding. There's no third thing. And normally the maths is heavily in your favour. On a healthy scalp about 90% of your hair is in the growing phase at once, quietly getting longer for years at a time. Only a small handful are resting and about to let go. That's why you never notice. A few fall out each day, and there's a whole army still growing to cover for them. The medication shifts that balance. Hair that should have stayed in the growing phase moves into shedding instead, and the calorie deficit pushes more across at the same time. On these meds that 90% can fall to 40 or 50. So it's not a few strands a day anymore. It's a clump in the shower, a brush you don't recognise, a ponytail that's lost its weight. But here's the part that actually explains why nothing worked. Every hair the medication pushed into shedding is still sitting there. And while you are still on the medication, nothing is moving it back. You're not just losing more. You're growing less at the same time. That's why the thin spots don't fill back in on their own. There's barely anything left on the growing side to cover them. And you cannot eat your way out of that. Protein feeds a strand. It doesn't move a follicle from one phase to the other. That's a completely different job. That is why the protein did nothing, the collagen did nothing, the biotin did nothing, and quitting for six weeks did nothing. Coming off stopped new hair shifting over. It never moved a single follicle back. Your follicles did not die. They're sitting in the shedding phase, empty, waiting for something to move them back into growing. But this is where the warning gets urgent. Because a follicle can sit like that a while and still come back. Past a certain point, it stops re-entering the growing phase at all. Not dead. Just past the point where anything reaches it. That's not resting anymore. That's gone. That is what permanent in that study meant. The 62% was not a scare number. It was a clock. And I had been running mine down with protein shakes for fourteen months. Here is the part I would go back and change if I could. The study gave me the number for half a million women. It could not tell me a single thing about me. How much of mine had already crossed. How much was still sitting there recoverable. How long I had left before the rest of it went. I found that out from a quiz, and it took two minutes. It was built by the dermatologist who ended up being the answer to all of this, and it asks you the things that actually decide your odds. How long you have been on your medication. How long the shedding has been going. Where it shows worst. How much longer you plan to stay on. Then it shows you your own balance. Where your growing-to-shedding ratio sat before you started, and where it sits today. Not the average woman. Yours. Mine was further gone than I had let myself believe. I sat in my kitchen and looked at it and understood, for the first time in fourteen months, exactly what I had been doing to myself with a protein shake. If it is not for you, close the tab. It costs you two minutes and it tells you where you actually stand. The dermatologist is James Kilgour. Board-certified, Stanford-trained. He spent eighteen months building a serum for exactly this. Women losing their hair on these meds and being told to quit the drug or eat more protein, and watching it get worse either way. He built it for his own mother. She was on one of these medications for her health, couldn't come off it, and it was taking her hair. And he didn't run a survey. He sent it to an independent lab, Dermaclaim, and had them count the shedding by hand. Every strand off a clinical brush. Every strand off a clinical wash. Before and after. Wash count down 68%. Brush count down 60%. And 95% of the women were shedding less by week six. Peer-reviewed and published in the Journal of Drugs in Dermatology. Counted hairs. An outside lab. In print. Not a survey. One serum. Thirty seconds before bed. Topical, nothing swallowed, nothing that touches the medication. It's called KilgourMD. Here's what happened to me. Week one, nothing, and I want you to expect that. Week three, the wad of hair I'd peel off the shower wall was smaller, then one morning there was almost nothing in my hand. Week six, the part stopped widening, and there were tiny baby hairs along my hairline, standing up when I pulled it back. By week twelve, the ponytail had weight in my hand again. A rope instead of a paintbrush. I'm still on my medication. I never gave back a pound. I got to mine in time. That's the whole reason I'm telling you this. The women in that 62% didn't get a warning. They got told to eat more protein. You just got the warning. You've got two roads. Change nothing, keep buying the shakes, and the balance stays where it is. The part that is widening keeps widening, month three to month six to the one-year mark, until the follicles sitting on the shedding side slip past the point where they can move back. That is the road where permanent stops being a word in a study and becomes the top of your own head. Or spend two minutes finding out where you actually are, and deal with it while the window is still open. The quiz is here. It will show you your own balance, and how much of it is still recoverable based on how long you have been shedding. That last part is the bit I needed and did not have. Because this does not look the same on every woman, and the timing changes everything. Take it before you spend another month waiting this out. https://kilgourmd.com/pages/glp1-hair-quiz You don't have to take my word for any of this either. Dr. Kilgour gives you 90 days. Use it every night, and if your part isn't filling in, one email gets every penny back. You keep the bottle. That's his risk, not yours. The follicles are still there. For how much longer, I can't tell you. That's why I stopped being quiet. Stop feeding it. Start shifting it back. P.S. Keep eating your protein. I mean that. On these meds it protects your muscle and your strength while you lose weight, and that matters. It just is not hair advice. It never was. Your follicle was never starving for it. P.P.S. Yes, you keep the weight. This has nothing to do with your medication and it will not touch your results. Quitting a medication that fixed your health to save your hair is, in the words of the experts, the single biggest mistake a woman in your position can make. The weight comes back. The hair does not. You do not have to choose. P.P.P.S. The quiz asks how long you have been on it and how long the shedding has been going, and those two answers change the whole picture. Six weeks of shedding and two years of shedding are not the same problem and do not get the same answer. Two minutes. P.P.P.P.S. If you have already come off yours hoping that would fix it, the quiz covers that too. Coming off stops new hair shifting over. It does not move back what is already sitting there. That is a different problem and it needs a different answer. P.P.P.P.P.S. Do not sit on this the way I did. A follicle that has only been on the shedding side a few months moves back fast. One that has been sitting for two years may not move back at all. Resting is fixable. Gone is not. P.P.P.P.P.P.S. For anyone who wants to read it themselves: the big study is out of George Washington University in JAAD International, and the shedding results were published in the Journal of Drugs in Dermatology. Look them up. That is what changed my mind.