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Which vitamin deficiency causes hair loss?

07 October 2022
2-minute read

Which vitamin deficiency causes hair loss? 


Hair loss can be caused by a broad range of factors, from genetic issues to problems stemming from your lifestyle. But which vitamin deficiency causes hair loss? In this article, we explain what the science says and provide you with solutions to ensure that a vitamin deficiency won’t cause you to lose your hair. 


So, which vitamin deficiencies can lead to hair loss?


Research suggests that a lack of vitamin D in the body can cause hair loss. This is because vitamin D is known to play a role in the stimulation of both old and new hair follicles. As such, hair growth can be stunted if there are insufficient levels of vitamin D in the body. 


Specifically, a study linked vitamin D deficiency to alopecia, which is the condition responsible for bald patches that may appear on the scalp. One of the leading causes of vitamin D deficiency is a lack of direct sunlight, while a poorly balanced diet can also contribute. 


Are there any other vitamin deficiencies that can lead to hair loss? 


Unfortunately, it’s not just vitamin D deficiency that can cause hair loss in men. For instance, people who lack vitamin B7 - also known as Biotin - may suffer hair loss as a result. Biotin is a water-soluble vitamin that is found naturally in a range of foods, and most people get sufficient levels of this vitamin in their diets. 


One of the key roles of Biotin is the production of keratin, a protein that is integral to the growth of your hair, nails, and skin. People who are Biotin deficient are much more likely to suffer from hair loss than those that have enough of the nutrient in their system. 


There is also evidence that a lack of zinc can lead to hair loss, while researchers have also posited that low levels of selenium can also cause hair loss, but the latter is a rare condition. Ultimately, there are several vitamins that can lead to hair loss in men. So, what can you do about it? 


How to prevent vitamin-deficiency related hair loss 


To limit your chances of becoming vitamin-deficient, you need to make sure that you eat a balanced diet that includes all of the food groups. Specifically, you can get vitamin D from foods like oily fish, red meat, and liver, as well as certain fortified foods. 


As for vitamin B7, it’s prevalent in eggs, salmon, avocados, pork, sweet potatoes, nuts, and seeds. Incorporating more of these foods into your diet will reduce your risk of vitamin deficiency, thus reducing your risk of suffering from related hair loss. 


You can also consider opting for a Biotin supplement to boost the levels of vitamin B7 in your body. People who take a Biotin supplement consistently over time are more likely to have a healthier, stronger head of hair. 


If you’re worried about the rate at which you’re losing hair, check out our range of clinically-proven hair loss treatments, which include the likes of Finasteride and Minoxidil for male pattern hair loss. You can also reach out and ask us any questions if you’d like further guidance on the best treatment for your circumstances. 

All of our blog articles are reviewed by our Medical Director before publication.

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