The UK's leading skin clinic
The UK's leading skin clinic
Happy Christmass Happy Christmas
Concerned woman examining thinning hair possibly caused by metformin
Concerned woman examining thinning hair possibly caused by metformin

Does Metformin Cause Hair Loss

  • 3 Reasons & 4 Expert Solutions
  • Expert Team of
    professionals
  • Over 1 million
    Treatments delivered
  • Award winning
    Clinics Across the UK
  • Rated 92%
    on Trustpilot
  • 9 Clinics
    Across the UK

Metformin is widely prescribed to manage type 2 diabetes and polycystic ovary syndrome (PCOS). But it helps regulate blood sugar and improve insulin sensitivity.

Metformin does not directly cause hair loss. However, it may contribute indirectly by lowering vitamin B12 levels, which can lead to hair thinning in some cases.

Other factors like stress, hormonal imbalances, or underlying conditions like diabetes or PCOS may also play a role. If you're concerned, it's best to consult a doctor.

In this guide, we’ll discuss the science, root causes, and actionable solutions (including expert treatments.

Does Metformin Cause Hair Loss: 3 Reasons & 4 Expert Solutions

Metformin is a medicine often prescribed to someone with type 2 diabetes or polycystic ovary syndrome (PCOS). It helps lower blood sugar by improving how your body uses insulin.

It works by:

  • Reducing the amount of sugar made by your liver
  • Helping your cells absorb sugar more effectively
  • Lowering insulin levels in people with PCOS

While it helps regulate hormones and metabolism, these changes can sometimes affect hair growth.

hair-loss-brush-metformin-side-effect

Can Metformin Cause Hair Loss?

There’s no strong evidence that Metformin directly causes hair loss. However, some users report hair thinning or shedding while taking it. The connection may come from side effects of the medication rather than the drug itself.

Here are possible reasons Metformin may contribute to hair loss:

  • Vitamin B12 deficiency: Metformin can lower B12 absorption, and low B12 is linked to hair shedding
  • Hormonal shifts: Especially common in women with PCOS taking Metformin
  • Sudden weight loss: Quick drops in weight can stress the body, affecting the hair cycle

Not everyone will experience this side effect, but if you’re noticing hair loss after starting Metformin, it’s worth exploring further.

Who Is Most at Risk?

Hair loss linked to Metformin may be more common in:

  • Women with PCOS, due to hormonal imbalances
  • People on long-term or high doses of Metformin
  • Patients with low nutrient levels, especially B12 or iron
  • Those experiencing stress or weight changes from treatment

Signs Your Hair Loss May Be Related to Metformin

If your hair is shedding more than usual, it might be connected to your medication. Look for these signs:

  • Gradual thinning across the scalp
  • More hair falling out
  • Slower regrowth or noticeable bald spots

How to Confirm the Cause of Your Hair Loss

Hair loss can have many causes, from anxiety to health conditions. To find out if Metformin is a factor, talk to a medical professional and request blood tests.

Helpful tests include:

  • Vitamin B12 levels
  • Iron and ferritin
  • Thyroid function
  • Hormone panel

Manage and Treat Hair Loss from Metformin

Metformin and Vitamin B12 supplements symbolizing the cause of hair loss and a possible solution

You don’t have to stop Metformin to address the issue. There are several ways to reduce or reverse hair loss safely.

Nutritional Support

  • Take B12 supplements, especially if your levels are low
  • Include iron-rich foods and protein in your meals
  • Avoid crash dieting or sudden changes to your eating habits

Medical Adjustments

  • Talk to your GP about adjusting your Metformin dosage
  • Ask if switching medications is right for you, if hair loss is severe

Lifestyle and Stress Management

  • Reduce stress with relaxation techniques
  • Sleep well and stay hydrated
  • Keep a consistent hair care routine and avoid harsh treatments

Professional Hair Regrowth Solutions at CoLaz

If your hair isn’t improving with diet or medication changes, advanced treatments may help restore growth. CoLaz offers safe, effective hair regrowth solutions tailored to your needs.

Our services include:

Laser Hair Regrowth Therapy

  • Stimulates scalp circulation and promotes healthy follicles
  • Painless, non-invasive treatment with no downtime

Microneedling with Growth Serums

  • Improves nutrient delivery and hair density
  • Encourages collagen and natural regrowth

Platelet-Rich Plasma (PRP) Therapy

  • Uses your blood’s natural healing factors to boost hair growth
  • Ideal for hormone- or stress-related shedding

Scalp Analysis & Hair Consultations

  • In-depth assessment to identify the cause of your hair loss
  • Personalised treatment plan with expert guidance

How Much Does Treatment Cost?

Conclusion

While metformin isn't directly responsible for hair loss, its impact on Vitamin B12 levels can contribute to thinning hair in some individuals. The key is early detection and a proactive approach: monitor your symptoms, maintain a nutrient-rich diet, and consult a healthcare expert if you notice significant shedding.

Contact with personalised hair loss consultations and advanced hair restoration treatments to help you regain your confidence. Don’t let hair loss take control; take charge of your hair health today.

Frequently Asked Questions

Can Metformin Directly Cause Hair Loss?

Not directly, but it may lead to hair loss through vitamin deficiencies, especially Vitamin B12.

Can Hair Grow Back After Stopping Metformin?

Yes, especially if nutritional deficiencies are the cause of the hair loss. Supplementation and professional treatments can accelerate the regrowth process.

ARRANGE A CONSULTATION

ONE OF OUR ADVISERS WILL CALL YOU BACK SHORTLY TO ARRANGE YOUR CONSULTATION.

    Which service would you like?

    Hair Removal

    Skin Rejuvenation

    Inch Loss Treatments

    Non Surgical

    Skin Imperfections

    Health

    Other Treatments

    Hair Removal

    Skin Rejuvenation

    Inch Loss Treatments

    Non Surgical

    Skin Imperfections

    Health

    Other Treatments

    Existing Client?

    Gender*

    Request Consultation