Are you taking semaglutide or tirzepatide and noticing more hair in your brush or shower?
Hair thinning or shedding can be concerning, especially when you’re making positive changes toward your weight loss goals. While GLP-1 medications have helped many individuals manage their weight, some patients experience unexpected changes during treatment, including hair loss.
At Level Up Wellness + IV Therapy, we believe successful weight management is about more than the number on the scale. It’s about helping your body receive the nutrition, protein, hydration, and support it needs throughout the process.
Let’s discuss what current research says about GLP-1 medications and hair loss, why nutrition matters, and how you can support your overall health during medical weight loss.
Can GLP-1 Medications Cause Hair Loss?
Hair loss has been reported in individuals using GLP-1-based medications, including semaglutide and tirzepatide.
A 2026 systematic review and meta-analysis by Cheng and Chang examined nine clinical studies involving 4,114 GLP-1 medication users. The researchers found an increased risk of hair loss among individuals receiving GLP-1-based treatment compared with those receiving a placebo.
9
clinical studies reviewed
4,114
GLP-1 medication users
Cheng and Chang, 2026 systematic review and meta-analysis
Another systematic review by Gupta et al. (2026) identified associations between certain GLP-1 medications and hair loss, particularly with semaglutide and tirzepatide. The researchers also discussed rapid weight loss and nutritional changes as possible contributing factors.
However, not everyone taking a GLP-1 medication will experience hair loss, and the exact cause may differ between individuals.
Some hair shedding may be associated with the medication, while other cases may be related to rapid weight loss, inadequate nutrition, hormonal changes, or underlying medical conditions.
Understanding these possibilities is important before deciding how to address the problem.
Why Does Hair Loss Happen During GLP-1 Weight Loss?
1. Rapid Weight Loss Can Stress the Body
Your hair naturally moves through cycles of growth, rest, and shedding.
When the body experiences significant physical stress, including rapid weight loss, more hair follicles may enter the resting phase.
This can lead to a condition called telogen effluvium, which causes increased hair shedding, often several months after the triggering event.
Gupta et al. (2026) identified telogen effluvium as one of the hair loss patterns reported among GLP-1 medication users and highlighted rapid weight loss as a potential contributing factor.
For many individuals, telogen effluvium improves after the underlying stressor is addressed, although recovery can take several months.
2. Not Eating Enough Protein
One of the biggest nutritional concerns during GLP-1 weight loss is inadequate protein intake.
Semaglutide and tirzepatide can significantly reduce appetite, making it easier to eat smaller portions. While this supports weight reduction, it can also lead some individuals to skip meals or consume fewer essential nutrients.
Protein plays an important role in maintaining muscle mass, repairing tissues, and supporting normal hair growth.
Your hair is primarily composed of keratin, a structural protein. When the body consistently receives inadequate nutrition, normal hair growth may be affected.
At Level Up, we encourage clients to focus on getting enough protein rather than simply eating as little as possible.
Good sources of protein include:
- Chicken, turkey, fish, and lean meats
- Eggs and egg whites
- Greek yogurt and cottage cheese
- Beans, lentils, and tofu
- Protein shakes or smoothies when appropriate
Your daily protein goal should be individualized based on your weight, activity level, medical history, and overall nutritional needs.
For individuals using GLP-1 medications, adequate protein intake is also important for preserving lean muscle during weight loss.
3. Vitamin and Mineral Deficiencies
When your appetite decreases, your intake of essential vitamins and minerals may decrease as well.
Certain nutritional deficiencies can contribute to hair shedding or affect normal hair health.
Nutrients that may be important to evaluate include:
| Nutrient | What to know |
|---|---|
| Iron | Iron deficiency, particularly low iron stores, may contribute to hair shedding. |
| Vitamin D | Vitamin D is involved in normal hair follicle biology, although supplementation has not been proven to resolve every type of hair loss. |
| Vitamin B12 and Folate | These nutrients support healthy cell function and red blood cell production. |
| Zinc | Zinc is involved in tissue growth and repair, and deficiency may contribute to hair changes. |
| Protein | Inadequate protein intake can also affect normal hair growth and overall nutritional health. |
It’s important to remember that not everyone experiencing hair loss has a vitamin deficiency.
Taking supplements without knowing your nutritional needs may not address the underlying cause. Excessive amounts of certain vitamins or minerals can even contribute to health problems.
This is why individualized assessment and appropriate laboratory testing are valuable.
Wondering whether your nutrition needs a closer look? Our team is happy to talk it through with you.
4. Eating Too Few Calories
GLP-1 medications are designed to help manage appetite, but the goal should never be to stop eating or consume as little food as possible.
Your body still requires sufficient calories, protein, healthy fats, carbohydrates, vitamins, and minerals to function properly.
If you regularly skip meals, struggle to consume adequate food, or experience persistent fatigue, your nutritional intake may need to be reassessed.
A 2025 expert consensus statement by Sievenpiper et al. emphasized the importance of nutritional and lifestyle support for individuals receiving GLP-1-based obesity treatment.
The takeaway is simple: Weight loss should support better health, not create additional nutritional problems.
How Can You Support Healthy Hair During GLP-1 Treatment?
Although no strategy can guarantee prevention of hair loss, several habits can help support overall health and nutritional adequacy.
Make Protein a Priority
Try including a protein source with every meal.
For example, eggs or Greek yogurt at breakfast, chicken or tuna at lunch, and fish or lean meat at dinner can help you distribute protein intake throughout the day.
If your appetite is limited, smaller protein-focused meals or an appropriate protein shake may be easier to tolerate.
Focus on Nutrient-Dense Foods
Eating less food makes the quality of what you eat even more important.
Choose meals that include protein, vegetables, fruits, whole grains, and healthy fats whenever possible.
These foods provide essential nutrients that support your body’s normal functions.
Avoid Extreme Calorie Restriction
Weight loss should be sustainable.
If your appetite is so suppressed that you’re unable to eat regular meals, discuss your symptoms with your prescribing provider.
Your treatment plan may need to be reassessed to ensure you’re meeting your nutritional needs.
Stay Hydrated
Hydration is another important part of overall wellness.
Some individuals taking GLP-1 medications experience nausea, vomiting, or reduced fluid intake, which can increase the risk of dehydration.
Drinking adequate fluids supports normal body function, although hydration alone does not prevent or reverse hair loss.
Include Strength Training
Weight loss can involve reductions in both fat and lean muscle.
Resistance training, along with adequate protein intake, can help support muscle preservation.
Maintaining muscle mass is an important part of long-term weight management and overall physical health.
Can Vitamins Help With Hair Loss During GLP-1 Weight Loss?
This is one of the most common questions we hear from clients.
Vitamins and supplements can be helpful when they address a nutritional deficiency or help fill a dietary gap. However, supplements should never be viewed as a replacement for balanced nutrition.
There is currently no strong clinical evidence that a particular multivitamin or vitamin spray prevents or reverses GLP-1-related hair loss in everyone.
At Level Up, we encourage clients to begin with their overall nutritional intake and discuss supplementation with their healthcare provider when appropriate.
Quicksilver Scientific Ultra Vitamin®
For clients who are concerned about meeting their daily nutritional needs, Quicksilver Scientific Ultra Vitamin® is one of the nutritional support products available through Level Up.
Ultra Vitamin is a liquid multivitamin supplement designed to provide a range of essential vitamins.
For individuals who struggle to maintain consistent nutritional intake, a multivitamin may help fill certain dietary gaps when appropriate.
However, it is important to understand that Ultra Vitamin is not a treatment for hair loss and does not replace adequate protein intake, nutritious meals, or evaluation for underlying deficiencies.
Before adding any supplement, review the current product label, ingredients, existing medications, and other supplements with your healthcare provider.
Vitamin Sprays for Convenient Nutritional Support
Level Up also offers vitamin spray options for clients who prefer an alternative to traditional tablets or capsules.
Depending on the specific product, vitamin sprays may provide nutrients such as vitamin B12 or vitamin D.
These products may be useful for certain individuals who need additional nutritional support, but their appropriateness depends on the formulation, dose, and individual nutritional needs.
Vitamin sprays are not automatically better absorbed than other supplement forms, and they should not replace appropriate medical treatment for a confirmed deficiency.
Our approach is nutrition first, supplements when appropriate, and individualized medical guidance throughout the process.
When Should You Be Concerned About Hair Loss?
Some increased shedding may be temporary, particularly when associated with rapid weight loss or nutritional changes.
However, not all hair loss is caused by GLP-1 medications.
Other potential causes include thyroid disorders, iron deficiency, hormonal changes, hereditary hair loss, certain medications, and scalp conditions.
Consider scheduling an evaluation if you experience:
- Sudden or excessive hair shedding
- Noticeable thinning or bald patches
- Scalp irritation, redness, pain, or scaling
- Hair loss that continues or worsens
- Significant fatigue, weakness, or dizziness
- Difficulty maintaining adequate food or fluid intake
Depending on your symptoms and medical history, your healthcare provider may recommend laboratory testing or referral to a dermatologist.
Testing may include a complete blood count, thyroid function, iron studies, or selected vitamin and mineral levels when clinically indicated.
Avoid stopping or changing your prescribed medication without discussing it with your provider.
Does Hair Grow Back After GLP-1-Related Hair Loss?
In cases of telogen effluvium caused by temporary physical stress or nutritional changes, hair growth often improves once the underlying issue is corrected.
However, improvement is not immediate.
Hair growth occurs gradually, and it may take several months before noticeable changes appear.
Some individuals may have other forms of hair loss that require additional evaluation or treatment.
Gupta et al. (2026) emphasized that more research is needed to clarify the mechanisms and long-term outcomes of hair loss associated with GLP-1 medications.
This is another reason why persistent or significant hair loss should be evaluated rather than automatically attributed to weight loss.
At Level Up, We Believe Healthy Weight Loss Goes Beyond the Scale
At Level Up Wellness + IV Therapy, we believe successful weight management should focus on improving overall health, not simply losing pounds.
That means paying attention to how your body responds throughout treatment.
Are you eating enough protein? Are you getting adequate vitamins and minerals? Are you maintaining muscle mass? Are you experiencing symptoms that may indicate your nutrition or treatment plan needs attention?
These questions are just as important as the number on the scale.
Whether you’re currently using semaglutide, tirzepatide, or exploring medical weight management options, our goal is to help you make informed decisions about your health.
Our team can discuss available weight management services, nutritional support products, and whether additional clinical evaluation may be appropriate.
Because healthy weight loss isn’t just about losing weight. It’s about supporting your body, protecting your health, and building habits that last.
Have Questions About GLP-1 Medications, Hair Loss, or Nutritional Support?
Contact Level Up Wellness + IV Therapy in Waco, Texas, to learn more about our weight management and wellness services.
We’re here to help you take a more informed, balanced approach to your health and wellness journey.
References
- Cheng, P.-L., & Chang, H.-C. (2026). Glucagon-like peptide-1 receptor agonists and hair loss: A systematic review and meta-analysis. Diabetes Research and Clinical Practice, 237, 113333. https://doi.org/10.1016/j.diabres.2026.113333
- Gupta, A. K., Teasell, E. M., Economopoulos, V., & Mirmirani, P. (2026). GLP-1 therapies and hair loss: A systematic review of current evidence and implications for counseling. Science Progress, 109(2), 00368504261444578. https://doi.org/10.1177/00368504261444578
- Sievenpiper, J. L., Ard, J., Blüher, M., Chen, W., Dixon, J. B., Fitch, A., Gigliotti, L., Khunti, K., Lecube, A., Lean, M. E. J., Mittendorfer, B., Pfeiffer, A. F. H., Ryan, D. H., Vilsbøll, T., & Van Gaal, L. F. (2025). Nutritional and lifestyle supportive care recommendations for management of obesity with GLP-1-based therapies: An expert consensus statement using a modified Delphi approach. Obesity Pillars. https://doi.org/10.1016/j.obpill.2025.100228
Medical disclaimer: This article is intended for general education and does not replace individualized medical advice, diagnosis, or treatment. GLP-1 medications and nutritional supplements should be used under appropriate healthcare supervision. Individual needs and treatment recommendations may vary.
