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The Importance of Vitamin D for Healthy Hair Growth

When it comes to achieving luscious locks and maintaining healthy hair, we often focus on external treatments and hair care products. However, there's an essential nutrient that plays a significant role in hair growth: vitamin D. While many are aware of vitamin D's benefits for the skin, its critical role in promoting hair growth is often overlooked. In this article, we'll explore the importance of vitamin D for healthy hair growth, its connection to hair loss conditions, and strategies to ensure you're getting enough of this vital nutrient.

The Connection between Vitamin D and Hair Loss:

Vitamin D, specifically vitamin D3, delivers numerous health benefits to the body, including promoting healthy hair growth. Research suggests that vitamin D3 is involved in various signaling pathways within the hair follicle, playing a direct and critical role in the anagen phase, also known as the hair growth phase.

Interestingly, the connection between vitamin D and hair loss goes both ways. A review published in the Journal of Cosmetic Dermatology in 2021 revealed that individuals with certain non-scarring alopecia conditions, such as telogen effluvium, androgenetic alopecia, alopecia areata, and trichotillomania, are more likely to have insufficient levels of vitamin D.

An intriguing case report published in the Annals of Dermatology highlighted the potential of vitamin D in hair regrowth. A 7-year-old boy with alopecia areata, who had reduced vitamin D receptor (VDR) expression, experienced new hair growth after applying a topical vitamin D analog (calcipotriol) daily. The regrowth continued, and no hair loss was observed for the next six months.

Vitamin D and Hair Loss

Several studies have shown that people with hair loss are more likely to have low vitamin D levels in their blood. This suggests that vitamin D deficiency may contribute to hair loss. However, more research is needed to confirm this link and to determine the best way to treat hair loss caused by vitamin D deficiency.

One study found that patients with male androgenetic alopecia (male pattern baldness) were likelier to have low serum vitamin D levels than controls. This suggests that vitamin D deficiency may be more common in people with androgenetic alopecia than in the general population, and the second study found that patients with female pattern hair loss were more likely to have low serum vitamin D3 levels than controls.

Another study found that patients with alopecia areata (a type of hair loss that causes round, bald patches) were more likely to have vitamin D deficiency than controls, suggesting that vitamin D deficiency may contribute to alopecia areata.

The Impact of Vitamin D Deficiency on Hair Volume:

Vitamin D deficiency can noticeably impact hair volume and overall hair health. When vitamin D levels are suboptimal, it can decrease hair volume, affecting both the scalp and the rest of the body. William Gaunitz, a certified trichologist and founder of Advanced Trichology, explains that vitamin D3 directly interacts with hair follicles. Insufficient vitamin D levels can impede the hair follicles' growth phase and contribute to hair thinning.

The Widespread Insufficiency of Vitamin D:

Startling statistics reveal that approximately 41% of the population of U.S. adults is insufficient in vitamin D. Furthermore, around 29% of adults are outright deficient in this crucial nutrient. Given these numbers, it's clear that many individuals would benefit from increasing their vitamin D intake, especially if they are experiencing hair shedding or are looking to enhance their hair growth.

Strategies for Achieving Vitamin D Sufficiency:

While obtaining enough vitamin D from diet and sunlight alone can be challenging, supplementation offers a practical solution. To ensure optimal vitamin D levels, consider the following tips:

1. Choose Vitamin D3: When selecting a supplement, opt for vitamin D3 rather than D2. Vitamin D3 is considered the most effective form of the nutrient.

2. Efficacious Dosage: Experts recommend taking 5,000 IU of vitamin D daily to achieve optimal levels. This dosage can support hair follicle health and contribute to healthy hair growth.

3. Fat for Absorption: Select a supplement that includes built-in fats to optimize vitamin D absorption. Alternatively, if your supplement doesn't contain fats, take it with a meal to enhance its bioavailability.

4. Quality Supplements: Choose a high-quality vitamin D supplement from reputable brands. Mindbodygreen has compiled a comprehensive list of premium vitamin D supplements that meet the recommended criteria for efficacy and absorption.

What are the best hair supplements for people with hair loss?

MDhair Restore Supplements

For individuals experiencing hair loss, the MDhair Restore Supplements provide a comprehensive solution to replenish the nutrients needed for optimal hair growth. This dermatologist-formulated blend contains essential ingredients, including biotin, vitamins C, E, B6, B12, B5, iron, iodine, magnesium, zinc, selenium, and chromium. These nutrients work together to promote thicker, stronger, and healthier hair. Iron boosts circulation and carries oxygen to the hair roots, aiding in faster and longer hair growth. Biotin strengthens hair follicles and improves scalp circulation, while vitamins C, D, and E contribute to a healthy scalp and regrowth of thicker hair. Vitamin B12 and folic acid help regenerate and heal hair follicles, while minerals such as iodine, magnesium, zinc, selenium, manganese, and chromium support scalp health and promote denser hair growth. Including calcium to reduce hair breakage and vitamin K2 to stimulate blood flow to the scalp, the MDHair Restore Supplements offer a comprehensive approach to revitalizing hair growth.

MDhair Regrowth Supplements

The MDhair Regrowth Supplements are specifically designed for individuals with genetic or age-related hair loss. These supplements contain natural DHT blockers, including saw palmetto, nettle leaf extract, and Reishi and Maitake mushroom extracts. By blocking the effects of excessive DHT on the hair follicles, these supplements encourage thicker and healthier hair growth. Saw palmetto prevents the conversion of testosterone into DHT, reducing its impact on the hair follicles. Nettle leaf extract and mushroom extracts further inhibit the activity of DHT, promoting robust hair growth. The MDhair Regrowth Supplements include ashwagandha root extract, a potent adaptogen that helps control follicular damage by regulating cortisol levels and reducing stress. With vegan, sugar-free, sulfate-free, and non-GMO formulations, these supplements offer a natural and effective solution for individuals seeking to address hair loss caused by genetic factors or aging.


Q: Can vitamin D alone reverse hair loss?

A: While vitamin D plays a crucial role in hair growth, it's important to note that hair loss can have various causes. Vitamin D supplementation may benefit individuals with certain hair loss conditions, but it's best to consult a healthcare professional for a comprehensive assessment and personalized recommendations.

Q: Can I get enough vitamin D from sunlight?

A: While sunlight is a natural source of vitamin D, obtaining sufficient amounts solely through sunlight can be challenging, particularly for individuals living in regions with limited sun exposure or during winter. Supplementation can help ensure consistent and optimal vitamin D levels.

Q: Are there any risks of vitamin D supplementation?

A: Vitamin D supplementation is generally safe for most individuals when taken within the recommended dosage range. However, it's essential to consult with a healthcare professional before starting any new supplement regimen, especially if you have underlying health conditions or take other medications.


Vitamin D plays a vital role in promoting healthy hair growth, and its deficiency can contribute to hair loss and decreased hair volume. Understanding the connection between vitamin D and hair health underscores the importance of ensuring optimal vitamin D levels. Supplementation with vitamin D3, in conjunction with a balanced diet and exposure to sunlight, can help support hair follicle health and enhance hair growth. You can take a proactive step towards maintaining vibrant, healthy hair by prioritizing your vitamin D intake. Remember to consult a healthcare professional for personalized guidance and recommendations regarding vitamin D supplementation.


MDhair Restore Supplements
MDhair Regrowth Supplements


  1. Saini K, Mysore V. Role of vitamin D in hair loss: A short review. J Cosmet Dermatol. 2021 Nov;20(11):3407-3414.
  2. Zubair Z, et al. Prevalence of Low Serum Vitamin D Levels in Patients Presenting With Androgenetic Alopecia: A Review. Cureus. 2021 Dec 15;13(12):e20431.
  3. Siddappa H, et al. Evaluation of Association of Vitamin D in Alopecia Areata: A Case-control Study of 100 Patients in a Tertiary Rural Hospital of Southern India. Indian Dermatol Online J. 2019 Jan-Feb;10(1):45-49.
  4. Banihashemi M, et al., Dolatkhah M. Serum Vitamin D3 Level in Patients with Female Pattern Hair Loss. Int J Trichology. 2016 Jul-Sep;8(3):116-20.

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