1. Vitamin A
All cells need vitamin A for growth. This includes hair, the fastest growing tissue in the human body. Diets deficient in vitamin A may lead to several problems, including hair loss While it’s important to get enough vitamin A, you don’t want too much. Shop now at Amazon Summary Your hair needs vitamin A to stay moisturized and grow. Good sources include sweet potatoes, carrots, spinach, kale, and some animal foods.
Does Vitamin D Deficiency Cause Hair Loss?
There is some evidence that having a vitamin D deficiency does cause hair loss and other hair problems. Vitamin D stimulates hair follicles to grow, and so when the body does not have enough, the hair may be affected. A vitamin D deficiency may also be linked to alopecia areata, an autoimmune condition that causes patchy hair loss.
Research shows that people with alopecia areata have much lower levels of vitamin D than people who do not have alopecia. Other research shows that women who have other forms of hair loss also had lower levels of vitamin D.
Vitamin D
Supplementation with vitamin D may not have direct links with hair growth, but having a deficiency may impact hair health.
Many of the studies in the review found low levels of vitamin D in people with alopecia areata. Alopecia areata is an autoimmune condition. There is also little evidence to suggest that vitamin D can lead to hair regrowth.
However, further studies are necessary to confirm this potential link. Vitamin D supplements are available for purchase online, but a person should always check with their doctor before taking any vitamins. That said, vitamin D supplements are relatively safe, and toxicity is extremely rare.
An excessively high dose would be over 50,000 IU or when blood levels of vitamin D are greater than 150 ng/ml .
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It also affects the hair cycle, and its role in hair loss is under constant research. Objectives: This review aims to give a brief overview of vitamin D biology within the hair follicle, role in the etiopathogenesis, and rationale for supplementation in various alopecias.
Methods: A PubMed literature search was performed to review relevant current literature and studies investigating the role of vitamin D in the etiopathogenesis, as a supplement and a potential therapeutic modality in hair loss. Results and conclusion: Vitamin D is intricately involved in various signaling pathways of growth and differentiation of hair follicles. Most studies show an inverse relationship between serum vitamin D levels and non-scarring alopecias such as telogen effluvium, androgenetic alopecia, alopecia areata, and trichotillomania.
Vitamin D deficiency is also associated with scarring alopecia. However, conclusive studies to demonstrate the benefit of vitamin D administration in correcting hair loss and managing these conditions are lacking. Hence, further studies are needed before vitamin D can be routinely recommended as a treatment modality in these condition.