GLP-1s and Your Nails Falling Off: What a New Study Found, and Why It's Too Early to Worry
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You may have seen a headline this week linking GLP-1 medicines to nails lifting off the skin underneath. It sounds alarming, and if you're on Ozempic, Wegovy, Mounjaro or Zepbound, it's natural to look down at your hands. While the study is real, it's an early survey that can't show the drug caused anything. Below is what it found, what it can't tell you, and what to do if your nails do change.
Who This Helps
This is for anyone on a GLP-1 who has noticed their nails changing, or who saw the news and wants to know how worried to be. It's also for anyone thinking about starting one who wants the full picture first.
What the study looked at
Researchers shared the study on October 1 at a big meeting of European skin doctors in Vienna (Medscape). They surveyed 575 adults with type 2 diabetes, obesity or both who took a GLP-1, and compared them with 1,329 adults with the same conditions who had never taken one. People came from France, the US, Brazil and Mexico, and the GLP-1 group had been on the drug for about a year and a half on average.
The key detail is how the answers were gathered. People reported their own nail changes on a form, and no nail exams were done (EurekAlert). An outside nail expert, Dr. Shari Lipner, notes that results like these can reflect people noticing and reporting changes more, rather than the drug itself (Medscape).
What they found
Nail problems of some kind were common in both groups, which is the first thing to notice. About 66 in every 100 GLP-1 users reported at least one, against about 53 in every 100 people who weren't on one (Medscape).
The biggest gap was in nail lifting, which doctors call onycholysis. That's when the nail lifts away from the skin under it, and the lifted part often looks white (AAD). The two groups compared like this:
- Nail lifting: about 39 in 100 GLP-1 users, against about 9 in 100 others.
- Color changes: about 46 in 100, against 17 in 100.
- Ridges or grooves: about 47 in 100, against 32 in 100.
- Fragile nails: about 58 in 100, against 51 in 100.
The GLP-1 group was also far more likely to have lost weight lately, 76% against 47%. When the team looked only at people who had lost weight, the gap got smaller but didn't go away (Medscape).
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Why it's too early to worry
A few things about this study should keep the numbers in proportion, and the researchers said several of them themselves.
Many people had nail problems before they started. About half of the GLP-1 users said they'd had nail trouble before they started, and the authors say the study can't show the drug caused the changes (EurekAlert). One of the authors told Healthline that when they counted only nail lifting that began after the drug was started, the link nearly went away (Healthline).
It hasn't been peer reviewed yet. This was a talk at a meeting, so outside experts haven't checked the full methods the way they would for a journal (Healthline).
A skin care company supported it. The meeting's press release says the work had support from a company in the Pierre Fabre group, which sells hair and skin products (EADV). That doesn't make the results wrong, but readers should have it in view.
Outside experts are cautious. Dr. Shari Lipner, who runs the nail division at Weill Cornell in New York, told Medscape she doesn't think these data alone should cause concern. She said the study raises a question rather than changing care, and that doctors should take care not to scare patients (Medscape).
To be fair to the other side, the researchers also ran the numbers a second way. After allowing for other health problems, nail lifting was still about two to three times more common in GLP-1 users (EurekAlert). The authors think the true answer likely sits somewhere between those two results, so a small drug effect is still possible (Advisory Board).
One of the authors, Dr. Bianca Maria Piraccini of the University of Bologna, thinks the drug could be acting on nails directly. She notes that the gap held up after the team allowed for age, sex, country and other health problems. She also says nail lifting isn't the kind of change doctors tie to weight loss (Medscape). Both she and Dr. Lipner say more research is needed, and Dr. Lipner suggests a follow-up study where doctors check nails without knowing who takes what (Medscape). For full disclosure, Dr. Piraccini reports research support from Eli Lilly, which makes Mounjaro and Zepbound, and fees from Pierre Fabre/Ducray (Medscape).
Why weight loss might play a part
Nails and hair both grow from cells that divide fast, and they tend to show it when your body goes through a big change (Healthline). That's why hair shedding after fast weight loss is well known. On the Wegovy label, hair loss showed up in 3.3% of people on the 2.4 mg dose and 1% on a dummy shot. The label ties it to weight loss (Wegovy prescribing information).
Eating much less can also leave you short on protein, iron and zinc, which one dermatologist told Healthline can affect nails (Healthline). Dr. Lipner said it's fair for doctors to mention nail and hair changes during fast weight loss and to make sure patients get enough protein and nutrients (Medscape). That's a good step no matter what the next round of research finds.
What to do if your nails change
Don't stop your medicine on your own because your nails changed. One of the study's own authors said these changes are usually harmless and aren't a reason to quit a drug that's working without talking to your doctor (EurekAlert). A dermatologist interviewed by Healthline said the same thing (Healthline).
Nail lifting has plenty of common causes that have nothing to do with GLP-1s, like fungus, psoriasis and harm from a rough manicure. The American Academy of Dermatology says a skin doctor should look at any nail that's lifting (AAD). The academy also lists nail changes that call for a visit to a dermatologist:
- Redness, swelling or pain around a nail, which can mean infection.
- A nail that turns greenish-black.
- A new dark streak in a nail, or one that's changing.
- Deep grooves across the nail, which suggest something slowed its growth.
In the meantime, be gentle with manicures, since the academy lists rough ones as a common cause of lifting, and tell your prescriber about any changes so they can check your diet too. A dermatologist quoted by Healthline put it well: don't panic, but don't ignore nail changes that stick around. A fingernail usually takes about 4 to 6 months to grow out fully, so even a harmless change can take a while to clear (Healthline).
Final Takeaway
This survey found more nail problems in GLP-1 users, and nail lifting stood out most. But people judged their own nails, and about half had nail trouble before they started. That means the study can't show the drug is the cause, and it can't rule it out either. If your nails change, see a dermatologist, eat enough protein, and talk with your prescriber before you change anything about your treatment.
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Frequently Asked Questions
Can Ozempic or Mounjaro make your nails fall off?
A new survey found that GLP-1 users reported nail lifting more often than people not on them, but it can't show the medicine caused it. Healthline reports that nail lifting isn't listed on the US labels for these drugs, and it has common causes like fungus, psoriasis and injury, so ask a dermatologist to take a look.
Should I stop my GLP-1 if my nails are lifting?
No, not on your own. The study's authors and outside dermatologists both say nail changes aren't a reason to stop an effective treatment without talking to your doctor first. See a dermatologist and let your prescriber know.
Will my nails go back to normal?
A new nail grows out from the base, which takes about 4 to 6 months for a fingernail. Nobody knows yet whether nail changes seen in GLP-1 users reverse on their own, and the researchers say that's one of the questions they plan to study next.
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Lauren PescarusLauren Pescarus is a team member with GLP Winner where she works on marketing, content creation, and operations. She has over 10 years experience in the content creation space, including in the GLP-1 space where she works to stay on top of access news, research updates, and lifestyle tips guided by science.