Diabetes and Hair Loss: Causes, Treatment & Prevention Tips

Medically reviewed by Dr. Shruti Chavan, MBBS Dermatologist
Written by Ramona Sinha

Diabetes often causes symptoms like itchy skin, dry mouth, weight loss, blurry vision, and extreme fatigue. However, there is another undiagnosed and lesser-known side effect associated with the condition – hair loss.

The 2020 National Diabetes Statistics Report states that nearly 34.2 million people have diabetes (1). For many of them, hair loss or what is medically termed ‘alopecia areata’ may manifest as a temporary or long-lasting symptom. Living with hair loss can be extremely distressing. In this article, learn how diabetes can affect the hair growth cycle, how to identify it, and ways to deal with hair loss due to diabetes.

How Does Diabetes Affect Hair Growth?

Before you can understand how diabetes can affect hair growth, let us take a cursory glance at how human hair grows.

  • Human hair grows out of tiny pocket-like structures on the skin called follicles. The root of each follicle is made of protein cells.
  • The blood vessels nourish the follicle roots and promote hair growth.

However, diabetes can affect organs like the eyes, kidneys, heart, nerves, brain, and even the blood vessels. The damaged blood vessels restrict the flow of oxygen-rich blood to the scalp and hair follicles, interfering with the hair’s normal growth cycle.

But this is not the only cause of hair loss and hair thinning in people with diabetes. Here are some of the other reasons.

Common Causes Of Hair Loss In People With Diabetes

  • High Blood Glucose Or Blood Sugar Levels

High blood sugar levels are dangerous for the body and can trigger hair loss. Spikes in the sugar levels can cause inflammation, injuring the blood vessels on the scalp. This can lead to hair thinning and eventually halt hair growth as the hair follicles do not get adequate supply of nutrients.

  • Hormones And Stress

Hormones and stress can both affect the health of your hair. Those who have high blood glucose levels have a flat cortisol profile (2). In healthy humans, the cortisol (stress hormone) levels fluctuate. However, the cortisol levels remain unchanged in those with diabetes. Constant stress also increases the dihydrotestosterone (DHT) hormone, triggering hair loss (3).

  • Alopecia

Diabetes may trigger insulin resistance, which may cause androgenetic alopecia, also known as pattern baldness. This is common in both men and women. This condition stimulates the dihydrotestosterone (DHT) binding to the androgenetic receptors, causing hair thinning and hair loss (4).

  • Thyroid Imbalance

People with diabetes are more susceptible to thyroid disorders. Thyroid imbalance or hyperthyroidism may cause telogen effluvium or temporary hair loss (5). Telogen effluvium is often preceded by changes in the hair structure, such as dry, brittle hair, which may gradually reduce the hair volume.

  • Iron Deficiency

While diabetes does not directly cause anemia, certain conditions or complications associated with diabetes, such as kidney impairments, may cause iron deficiencies. Research shows that iron deficiency may cause pattern baldness (6).

  • Bariatric Surgery

Bariatric surgery or weight loss surgery is often recommended as an effective treatment for managing type 2 diabetes. Rapid weight loss may also cause hair loss.

  • Nutritional Deficiencies

Diet naturally plays a huge role in keeping your hair healthy. However, nutritional deficiencies are quite common in people with diabetes (7). Deficiencies in folate, biotin, riboflavin, and vitamin B12 have been particularly associated with hair loss (8).

Apart from these causes, the type of diabetes may also determine your risk for hair loss. Let us understand the connection.

Does The Type Of Diabetes Contribute To Hair Loss?

Yes. Both type 1 and type 2 diabetes can cause hair loss. However, androgenetic alopecia is specifically related to type 2 diabetes, and alopecia areata is common in type 1 diabetes (4), (9). People with Type 1 diabetes are also at a higher risk of developing thyroid disorders, nutritional deficiencies, and stress that can impact the hair growth cycle.

If you are curious which regions can experience hair loss most from diabetes, read on to get the straight facts.

Which Regions Are Most Affected By Hair Loss Due To Diabetes?

Hair loss from your lower body is an early marker of type 2 diabetes. Research found that type 2 diabetes caused hair loss beneath the knees (9).

Diabetes causes hair loss, especially from the scalp and the lower legs. It may also cause hair loss in other body parts. However, the difference is difficult to ascertain in the rest of the body compared to the upper and lower extremities.

The good news is, some treatments can reverse or slow hair loss. Read on to know how hair loss can be treated in people with diabetes.

Treating Hair Loss In People With Diabetes

With accurate diagnosis and early treatment, hair loss can be both prevented and treated. The following are some options for treating hair loss in people with diabetes.

The doctor may recommend these options depending on the severity of the condition, other health-related factors, and personal preferences.

  • Topical Medication

Minoxidil is a commonly prescribed FDA-approved over-the-counter treatment for hair loss (10). It affects the follicular cells and promotes hair growth and minimizes hair loss. However, the medication is not a permanent solution for hair loss and may need to be used on an ongoing basis for achieving continued results.

  • HbA1c And Blood Sugar Management

Managing blood sugar levels is another effective way to reverse or stop hair loss due to diabetes. According to the American Diabetes Association, adults with diabetes should aim to keep their A1C (a test used to diagnose diabetes) at less than 7% (11). This will improve your overall health and lower the risk of hair loss.

  • Nutrition

If your body does not get enough nutrition, it may affect its functions, including hair health. A blood test can reveal any such nutritional deficiencies. The doctor may suggest taking supplements for iron, biotin, zinc, and folic acid deficiencies.  These are widely recommended for promoting hair growth.

They may also suggest cosmetic, surgical, and other treatment options to minimize hair loss.

Other Treatment Options To Minimize Hair Loss

1. Laser Therapy

Laser therapy is a painless, non-invasive, and safe procedure and is often suggested by doctors to minimize hair loss.  The lasers are targeted at the treatment area to stimulate the hair follicles and promote hair growth. The doctor may use lasers of different wavelengths and clinical strengths, depending on your condition.

2. Injections Of Immunosuppressive Drugs Or Corticosteroids

Corticosteroids and immunosuppressant drugs, such as methotrexate and cyclosporine, are sometimes used to treat alopecia areata (12). These medications are directly injected into the balding or thinning area (under the dermis) to stop inflammation, which, in turn, may promote hair regrowth. The injections may need to be administered every 4 to 8 weeks or more often.

3. Hair Transplant

Hair transplant is another effective and permanent solution for hair loss. Hair transplant involves taking hair from thicker parts of the scalp and planting it on balding or thinning areas.

4. Platelet-Rich Plasma (PRP)

Platelet-rich plasma is a safe treatment for hair loss (13). Here is how the procedure works:

  • A small amount of blood is drawn from the arm.
  • The platelet-rich plasma is separated from the rest of the blood’s components.
  • It is injected into the target areas.

While the procedure is not very long, you may have to return for repeat injections recommended by your dermatologist.

5. Microneedling

Microneedling, along with minoxidil, is effective in treating androgenetic alopecia (14). This is a dermaroller procedure that uses a roller with needles to prick the skin. It is mainly used as an anti-aging procedure but can be used on the scalp too.

6. Prescription Medications

Apart from conservative and invasive treatment options, hair loss can also be treated with prescription medications. Prescription medications to treat hair loss include:

1. Finasteride For Pattern Hair Loss

Finasteride is an FDA-approved drug for treating pattern hair loss. Research shows that taking 5mg/day finasteride can treat female pattern androgenetic alopecia. However, it may also cause libido reduction (15).

2. Spironolactone For Female Pattern Hair Loss

Spironolactone is the prescription medication for female pattern hair loss (16). It helps increase hair thickness and reduce hair loss. However, this medication is not safe to take during pregnancy.

There is no doubt that medical treatments and medications are some of the most effective ways to treat hair loss. However, self-care and developing healthy habits are equally important for preventing hair loss. Here are a few tips to take care of yourself and your hair at home.

Tips To Naturally Prevent Hair Loss From Diabetes

  • Monitor Blood Sugar Levels

Regulating your blood sugar levels can help reduce side effects like hair loss. Once you control the blood sugar levels, your hair loss will naturally slow down.

  • Reduce Physical And Emotional Stress

The impact of stress on hair loss is considerable. You can be especially sensitive to stress if you have diabetes. Try to control your stress levels. Do not push yourself and try to relax by practicing deep breathing exercises, meditation, or yoga.

  • Exercise

Exercise can improve blood circulation to your body’s cells, including your hair follicles. It is also good for maintaining your physical and mental health.

  • Establish A Healthy Hair Care Routine

Your daily hair care routine can affect the health of your locks. Try the following tips to offset the chances of hair loss:

  • Avoid hair-damaging procedures, such as coloring, straightening, or perming.
  • Limit the use of flat irons, curling tools, or hot combs.
  • Use a gentle shampoo and conditioner.
  • Try Essential Oils

Essential oils may have various beneficial effects on hair health. Some oils worth trying are:

  • Lavender
  • Peppermint
  • Rosemary
  • Thyme
  • Lemongrass
  • Clary sage
  • Tea tree essential oil

You may mix them with carrier oils and massage the scalp. This can keep the scalp and the hair healthy.

  • Eat Healthy

If your diet is low in whole grains, fruits and vegetables, dairy products, and other nutrient-rich foods, you are bound to experience a lot of hair loss. Hence, it is important to start eating healthy.

To Conclude

If you are experiencing noticeable hair loss, talk to your doctor first to establish the cause. If diabetes is the main cause of your hair loss, consult a doctor, and start treatment immediately. While you are on treatment, take care of yourself and try to cut down your stress levels to minimize hair loss.

Frequently Asked Questions

Is hair loss a sign of diabetes?

Hair loss could be a sign of diabetes as many people with diabetes tend to have alopecia areata that causes hair fall.

Does prediabetes cause hair loss?

Yes, prediabetes is usually a symptom of insulin resistance, which can cause unusual hair loss.

Does Victoza cause hair loss?

Yes, Victoza, an injectable prescription drug used to treat diabetes, is known to cause hair loss. Talk to your doctor if you notice symptoms of hair loss after using Victoza.

What vitamins are recommended for hair loss related to diabetes?

Vitamins A, C, D, B12, and biotin can improve hair loss symptoms.

Do diabetic medications cause hair loss?

Yes,  diabetic medications, especially corticosteroids, may cause hair loss.


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Ramona is a journalist-turned-content writer. She holds a Master’s degree in English Literature and has been writing for the digital world for over five years. She specializes in writing for Skin Care. She has done a certificate course titled ‘Dermatology: Trip To The Skin’, offered by Novosibirsk State University. She believes that beauty begins with a good skin care regimen and is on a mission to eliminate all toxins from her routine. She helps and guides readers in selecting products and ingredients specific to their skin type/issue. When Ramona is not working, her books and passion for music, good food, and traveling keep her busy.