Can Wegovy Cause Hair Loss? Here’s What You Should Know

Introduction

As obesity rates are continuously increasing worldwide, medications for weight management are becoming popular for people who struggle to achieve lasting results with diet and exercise alone. One such medication is Wegovy, a prescription injection that helps with weight management in individuals who are obese or have excess weight with other health issues like diabetes, heart disease etc.

With people starting to use Wegovy more commonly, there are many questions about its safety and side effects^1,2. While the possibility of gastrointestinal side effects with Wegovy is commonly discussed, concerns like hair loss are paid lesser attention to. Therefore, in this blog will discuss what Wegovy does to our body, can Wegovy cause hair loss, and whether this hair loss is a direct side effect or just a temporary response to weight changes in the body^3,4.

What Is Wegovy?

Wegovy is a brand name of a prescription weight loss medication which contains semaglutide as its main component. It belongs to a group of medicines called GLP 1 receptor agonists, where GLP-1 stands for glucagon-like peptide-1.

GLP-1 is a natural hormone that our body produces mainly in the gut after we eat. This hormone helps to control blood sugar levels, slow digestion, and regulates appetite. GLP-1 receptor agonists like Wegovy copy the action of this natural hormone and target specific organs involved in hunger control and blood sugar regulation.

Wegovy works by slowing gastric emptying, allowing food to remain in stomach for a longer time and making you feel full after meals. It also acts on appetite-regulating centres in the brain to reduce hunger and increase feelings of fullness. In addition, Wegovy acts on the pancreas by increasing insulin secretion and reducing glucagon release which keeps the blood sugar levels stable^2,5.

Wegovy is approved for long term weight management in adults with obesity or overweight who have at least one weight related condition such as type 2 diabetes, high blood pressure, high cholesterol, or sleep apnoea. It is also approved for adolescents aged 12 years and older who are very overweight for their age and height (BMI at or above the 95th percentile, meaning heavier than 95 out of 100 children of the same age and sex) and weigh more than 60 kg⁶.

Does Wegovy Cause Hair Loss?

As with any medication taken for weight management, people may have concerns about the side effects of Wegovy. And many of you may wonder Does Wegovy cause hair loss?.

Well, based on available medical information, hair loss may not be a primary side effect of Wegovy (semaglutide). However, a small number of people using this medicine may notice increased hair fall during treatment, which has raised concerns.

When Wegovy was tested in large groups of people before approval, only a few individuals reported hair loss. In adults, 3 out of 2,116 people using Wegovy reported hair fall, compared with 1 out of 1,261 people who were not taking the medicine. In adolescents aged 12 years and above, 4 out of 133 reported hair loss, while no cases were reported among those not using Wegovy⁷.

These findings suggest that hair loss may occur with Wegovy but it is not very common and may not be clearly linked to the medicine itself. Some people using Wegovy may notice hair fall during their weight-loss journey because of different reasons, and it may not always be clear whether the change is linked to the medicine, weight loss itself, or other factors^7,8.

The next section explains the possible reasons for Wegovy side effects hair loss during weight loss.

Why Does Wegovy Cause Hair Loss?

Wegovy may not directly attack or damage the hair roots (hair follicles). If some people notice hair fall while using Wegovy, it may happen because of changes in the body during weight loss, rather than the medicine harming the hair.

When a person loses weight quickly, the body may feel stressed and may try to save energy for more important functions. During this time, the body may slow down hair growth for a while. This may cause more hair to move into a “resting stage” and then fall out later. This temporary type of hair shedding is called telogen effluvium (TE)⁸.

Hair fall may also happen as the person eats less food than before. One study suggests that very low-calorie intake may reduce the energy supply needed to grow hair, which may trigger TE. Hair may improve after calorie intake becomes more normal again⁹.

Also, because Wegovy can reduce appetite, some people may eat less food, with lower calorie and protein intake, and may not even get enough vitamins and minerals over time. These nutrients support healthy hair growth. Low levels of nutrients such as iron, vitamin D, B vitamins (including B12 and thiamine), zinc, biotin, and folate may increase hair shedding^10,11.

Moreover, hormonal shifts that may occur when the body adjusts its metabolism on Wegovy, including thyroid changes, may also affect hair growth¹².

With these possible reasons in mind, the next section explains who may be at higher risk of hair fall while using Wegovy and during weight loss.

Who Is Most at Risk of Hair Loss on Wegovy?

Some people may be more likely to experience Wegovy hair loss because of the following changes occurring in their body during weight loss:

• Rapid weight loss: People who lose weight very quickly may notice hair fall because sudden weight loss can stress the body and push hair into a resting stage^8,13.
• Very low-calorie intake: Those who eat too few calories may have slower hair growth because hair-making cells need enough energy to work properly⁹.
• Low protein intake: People who do not get enough protein may experience hair shedding since protein is essential for hair structure and strength¹⁰.
• Vitamin and mineral deficiencies: Low levels of iron, vitamin D, B12, biotin, or zinc may weaken hair growth¹¹.
• Existing pattern hair thinning: Individuals with predisposed hair thinning may notice more hair loss when losing weight⁸.
• Hormone changes: Thyroid or other hormonal changes during weight loss may disturb the hair growth cycle¹².

Overall, certain people may be more likely to experience hair loss on Wegovy, but whether this shedding is temporary or longer lasting is the next question we will explore.

Is Wegovy Hair Loss Temporary or Permanent?

Hair loss from Wegovy is usually temporary. Most people who notice hair shedding, called telogen effluvium (TE), may start seeing it three to six months after starting the medicine.

Hair usually may start growing back as the body adjusts to weight loss and metabolism stabilizes. For most people, this may happen within six to twelve months, and in some cases, hair may even look thicker or healthier after recovery.

Hair loss may need a doctor’s check if it is very severe, continues for more than a year, or causes bald patches, because this could mean another problem like alopecia areata, nutrient deficiencies or hormonal issues^13,14.

Note: Real-world data related to hair loss with Wegovy is still limited and more long-term research is needed to confirm its actual cause, timeline and recovery when taking Wegovy.

Ways to Minimise Hair Loss While Taking Wegovy

Hair loss is a concern for some people taking Wegovy, and here are practical ways you may be able to reduce it, based on expert guidance and studies:

• Eat enough protein every day: Protein is needed for strong hair. If your body doesn’t get enough, hair can fall out more easily.
• Include key vitamins and minerals: Make sure to get iron, zinc, calcium, vitamin D, biotin, folate, and other nutrients as lack of these may increase hair shedding.
• Use nutritional supplements if needed: If you are not getting enough nutrients from food, discuss with doctor for the need of supplementation with amino acids, zinc, iron, calcium, selenium, and folic acid as these may help support hair health¹⁵.
• Avoid very low-calorie diets: Eating too little can stress the body and hair follicles, increasing hair loss. A balanced diet helps hair stay healthy. Include vegetables, fruits, whole grains, and lean proteins to prevent nutrient deficiencies¹⁶.
• Manage stress: Feeling very stressed can cause hair to fall out. Try simple ways to reduce stress, like getting enough sleep, taking deep breaths, doing light exercise, or practicing meditation, which can lower stress and help protect your hair^17,18.
• Use gentle hair care: Wash hair carefully, avoid rough brushing, and don’t scrub your scalp hard.
• Limit hair oil to the shafts: Oils can protect hair ends but avoid putting them on the roots. 30–60 minutes is enough¹⁵.

Early identification of the condition, nutritional supplementation, counselling and dermatologic intervention when needed, can help keep your hair healthier while you manage your weight with Wegovy.

Also Read: Does Wegovy Really Make You Tired? 

Conclusion

While further studies are needed, hair loss associated with Wegovy is generally not considered a direct effect of the medicine. Instead, it may occur due to changes in the body during weight loss, including rapid weight reduction, low calorie or protein intake, and potential vitamin or mineral deficiencies. Most cases involve temporary shedding, known as telogen effluvium, which usually starts a few months after beginning Wegovy and often improves as the body adjusts and nutrient intake stabilizes. By following a balanced diet, ensuring adequate protein and micronutrients, and practicing gentle hair care, individuals may minimise hair loss. Regular monitoring and medical advice are important for those with severe or persistent shedding.

Also Read: Wegovy Diet Plan: Complete Food Guide, Side Effect Management & Meal Ideas

Frequently Asked Questions (FAQs)

References

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