Does Ozempic cause hair loss?

April 15, 2025

Written by Maeve Ginsberg
Medically reviewed by Gia Epen, MD
Contributions by Jill Greer, RD
Reading time: 10 minutes

Key Points

• Research shows very few people (3%) taking high-dose semaglutide (Wegovy) report hair loss.
• Hair loss is usually related to rapid weight loss rather than a direct effect of the medication itself and is temporary.
• Consuming adequate protein, iron, and other nutrients can help minimize hair thinning while on GLP-1 medications.

If you're taking Ozempic or considering it for weight loss or diabetes management, you might have come across concerns about hair loss. Maybe you've noticed more hair in your shower drain since starting the medication, or perhaps you've heard about this side effect on social media.

This can be worrying – after all, no one wants to trade their weight concerns for hair concerns. Let's explore what the science actually says about Ozempic and hair loss, and what you can do if you're experiencing this side effect.

What is Ozempic & how does it relate to hair loss?

Ozempic (semaglutide) is a GLP-1 receptor agonist medication primarily used to treat type 2 diabetes. Its higher-dose version, Wegovy, is FDA-approved specifically for weight management.

The two medications are both produced by Novo Nordisk and both use semaglutide, but the maximum Wegovy dose is 2.4 mg, while Ozempic’s is 2 mg.

These medications have gained enormous popularity because they can lead to significant weight loss by reducing appetite and slowing digestion.

But, while hair loss isn’t a listed side effect, some people report hair thinning or loss while taking Ozempic or another GLP-1. But does Ozempic directly cause hair loss, or does something else play a role?

Does Ozempic directly cause hair loss?

The short answer is: not exactly. But there may be a connection.

In clinical trials of Wegovy (high-dose semaglutide) for obesity, about 3% of patients reported hair loss (compared to 1% on placebo). This suggests a small increased risk with the medication.

Similarly, with tirzepatide (Mounjaro), another popular GLP-1 medication, 5.7% of patients on the highest dose reported hair loss ( versus about 1% on placebo).

Interestingly, in trials of Ozempic at lower doses for diabetes (where weight loss was more modest), participants didn't report significant hair loss as a side effect. This gives us an important clue about what's really happening.

Why might you lose hair on Ozempic?

“Ozempic may cause hair loss due to the increased stress that rapid weight loss places on the body,” says Jill Greer, RD. “This stress can disrupt the normal hair growth cycle, leading to increased hair loss. Additionally, reduced food intake can result in nutrient deficiencies that are important for maintaining healthy hair.”

Rapid weight loss and telogen effluvium

The primary culprit isn't the medication itself, but rather the rapid weight loss it causes. This type of hair shedding is called telogen effluvium – a temporary condition where stress leads to more hair shed than normal.

It’s very common for rapid weight loss to trigger telogen effluvium. In fact, after bariatric surgery – another method of rapid weight loss – about 57% of patients experience hair loss, much higher than with Ozempic.

Rapid weight loss is, simply put, a form of stress on the body. As a result, your body diverts resources away from "non-essential" functions like hair growth to preserve energy.

Nutritional factors

GLP-1 medications significantly reduce appetite, which often leads to lower protein intake, possible deficiencies in iron, zinc, and other nutrients crucial for hair growth, and overall caloric restriction.

These nutritional factors can compound the stress of weight loss on your hair. Research shows that both caloric and protein malnutrition can impact hair growth and trigger shedding.

Hormonal changes

Some research suggests GLP-1 medications might indirectly affect certain hormones, including thyroid function, which could potentially influence hair growth. However, researchers still consider this connection theoretical and need to conduct more studies.

How common is hair loss on Ozempic and similar medications?

To reiterate, hair loss is uncommon but not unheard of with GLP-1 medications:

• With Wegovy (semaglutide): About 3% of patients reported hair loss
• With Mounjaro (tirzepatide): About 5-6% of patients on the highest doses reported hair loss
• With Ozempic (lower-dose semaglutide): Participants didn't commonly report hair loss as a side effect

This suggests that while the risk exists, most people taking Ozempic won't experience noticeable hair loss. And if they do, the rate and amount of weight lost likely connect to the hair loss rather than the medication itself directly causing it.

Is hair loss from Ozempic permanent?

Here's the good news: Hair loss associated with GLP-1 medications is almost always temporary.

Telogen effluvium typically begins about 2-3 months after the triggering event (rapid weight loss), resolves on its own within about 6 months, and results in complete hair regrowth in the following months.

Researchers have found no evidence that Ozempic or similar medications cause permanent hair follicle damage. Once your weight stabilizes and your body adjusts to the changes, hair growth typically returns to normal.

Who's most at risk for hair loss on Ozempic?

While anyone might experience hair shedding with rapid weight loss, some factors might increase your risk:

• Losing weight very rapidly (more than 1-2 pounds per week)
• Not consuming enough protein while on the medication
• Pre-existing nutrient deficiencies, especially iron, zinc, or vitamin D
• Being female ( some research suggests women might be slightly more prone to this side effect)
• Having underlying hair thinning conditions (GLP-1 medication-related shedding might make existing issues more noticeable)

How can you prevent hair loss while taking Ozempic?

While you can't completely eliminate the risk, you can take steps to minimize hair loss while on Ozempic or similar medications:

Focus on nutrition

“I always emphasize the importance of maintaining a balanced diet to ensure clients are getting all the essential micronutrients that support healthy hair and overall well-being,” says Jill Greer, RD. “I also remind them that managing stress is just as important, as both diet and stress levels play a key role in hair health. Taking care of both can make a meaningful difference in how our bodies respond to changes like weight loss.”

Try to maintain an adequate protein intake despite reduced appetite. Aim for at least 0.7g of protein per pound of body weight daily (or more if active).

Eat a variety of nutrient-dense foods to get essential vitamins and minerals, focusing on whole foods rather than processed options. You can try tracking your food intake temporarily to ensure you're getting enough nutrients despite eating less.

Working with a registered dietitian can significantly improve your nutrition while on Ozempic. They can create a personalized meal plan that accounts for your reduced appetite while ensuring you get enough nutrients to support hair health.

Dietitians can also help you identify high-impact, nutrient-dense foods that give you the most nutrition with smaller portions, monitor for potential deficiencies, and adjust your plan as your weight changes.

Consider a slower weight loss approach

Work with your healthcare provider to find the right dose and pace for weight loss. Remember that more gradual weight loss (1-2 pounds per week) may reduce the risk of stress-related hair shedding.
Stay patient with the process. Faster isn't always better when it comes to sustainable weight loss and minimizing side effects like hair thinning.

Talk to your doctor about supplements

Only try hair loss supplements if you have confirmed deficiencies. Taking extra vitamins, like biotin, without a deficiency won't prevent hair loss and can do more harm than good.

Ask your doctor to check your ferritin (iron storage), vitamin D, and zinc levels if you're concerned. A basic multivitamin can provide reasonable insurance if you're eating significantly less, but don't megadose specific vitamins without first confirming your needs.

What to do if you're already experiencing hair loss

If you've already noticed increased shedding while on Ozempic, don't panic. Remember, this almost always resolves temporarily. Here's what you can do:

• Don't stop your medication without consulting your doctor. The benefits of treating diabetes or obesity often outweigh temporary hair thinning.
• Focus on protein-rich foods at meals and snacks.
• Be gentle with your hair. Avoid harsh treatments, excessive heat styling, and tight hairstyles.
• Be patient. It typically takes 3-6 months for shedding to slow down and another few months for noticeable regrowth.

When to see a healthcare provider

While temporary hair shedding is usually not concerning, consult a healthcare provider if:

• Your hair loss seems excessive (coming out in large clumps rather than strands)
• You develop bald patches (rather than general thinning)
• Hair loss continues for more than 6 months
• You have other concerning symptoms along with hair loss

Your doctor might check for nutrient deficiencies or thyroid issues, evaluate other potential causes of hair loss, discuss whether adjusting your medication dose might help, or refer you to a dermatologist for specialized treatment if needed.

Ozempic vs. Wegovy vs. Mounjaro: Any differences in hair loss risk?

All GLP-1 medications that produce significant weight loss can potentially cause hair shedding. Here's how they compare:

• Wegovy (high-dose semaglutide): About 3% reported hair loss in trials
• Mounjaro (tirzepatide): About 5.7% on the highest dose reported hair loss
• Ozempic (lower-dose semaglutide): Hair loss isn’t commonly reported (likely because weight loss occurs more moderately)
• Older GLP-1s like Saxenda (liraglutide): Clinical trials show minimal hair loss reports

The key factor seems to be how much and how quickly you lose weight rather than which specific medication you take. Medications that lead to more dramatic weight loss might have slightly higher rates of hair shedding.

Navigating hair loss with Ozempic

Hair loss can be distressing, but if you experience it while taking Ozempic or similar medications, remember:

• This almost always resolves temporarily and connects to weight loss, not a direct medication effect
• The vast majority of people see complete hair regrowth within a few months
• Focusing on good nutrition, particularly adequate protein, can help minimize the impact
• The health benefits of treating diabetes or obesity typically outweigh this temporary side effect

Every person's experience remains unique. What works for one person may not work for another. Working with healthcare professionals can help you navigate any side effects while still achieving your health goals.

Frequently Asked Questions

Will my hair grow back after stopping Ozempic?

Yes, in most cases. The type of hair loss associated with GLP-1 medications usually manifests as temporary telogen effluvium, which resolves on its own. Hair typically begins growing back within a few months after the shedding phase ends, whether you continue or stop the medication.

How long does hair loss from Ozempic last?

Typically, shedding begins about 2-3 months after rapid weight loss starts and continues for about 3-6 months. After that, hair growth should return to normal, with noticeable improvements in fullness within 6-12 months.

Can I take biotin to prevent hair loss on Ozempic?

While companies market biotin for hair health, research shows that taking biotin supplements is useless unless you have a confirmed deficiency. A balanced diet with adequate protein matters more for hair health during weight loss than isolated supplements.

Does everyone on Ozempic experience hair loss?

No. Clinical trials suggest only about 3% of people on high-dose semaglutide report noticeable hair loss. Most people taking these medications will not experience significant hair thinning.

Should I stop Ozempic if I notice hair loss?

Generally, no. The health benefits of treating diabetes or obesity typically outweigh temporary hair thinning. Always consult your healthcare provider before making any changes to your medication regimen. They can help you weigh the risks and benefits for your specific situation.

If you worry about hair loss while taking Ozempic or other GLP-1 medications, a registered dietitian can help you develop a nutrition plan that supports both your weight goals and hair health.

A dietitian will create a customized eating plan that accounts for your reduced appetite while ensuring you get the nutrients needed to minimize hair loss, help you choose the most nutrient-dense foods, and monitor your progress over time.