The role of vitamin D in hair health
Vitamin D is also called the “sunshine vitamin.” It is essential for numerous bodily functions, including hair growth.It plays a significant role in the hair follicle cycle, particularly in the anagen (growth) phase. Research has shown that vitamin D receptors are significant for the production of new hair follicles. A study published in the journal Stem Cells Translational Medicine highlighted that vitamin D helps in the creation of new hair follicles and may help wake up dormant ones, aiding in hair regrowth.
How vitamin D deficiency leads to hair loss
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When our body lacks sufficient vitamin D, it can disrupt the normal hair follicle cycle, leading to hair loss. Vitamin D deficiency has been linked to alopecia areata, an autoimmune condition that results in patchy hair loss. According to a study published in the International Journal of Dermatology, individuals with alopecia areata had significantly lower levels of vitamin D compared to those without the condition.
A lack of vitamin D can cause the hair growth cycle to become unbalanced, resulting in more hair follicles entering the resting phase rather than the growth phase. This imbalance can lead to thinning hair and increased hair shedding.
How to identify the deficiency of Vitamin D
Recognising vitamin D deficiency is the first step in addressing potential hair loss related to it. Common signs of vitamin D deficiency include:
- Persistent low energy levels can be a sign of insufficient vitamin D.
- Vitamin D is crucial for bone health, and a deficiency can result in bone pain and discomfort.
- Some studies have linked low vitamin D levels with mood disorders, including depression.
- Noticing an unusual amount of hair in your brush or shower drain can be a red flag.
To confirm a deficiency, a simple blood test can be performed.
How to address vitamin D deficiency
If someone suspects that vitamin D deficiency is contributing to their hair loss, there are several steps that can be taken to improve their levels:
Spending time in sunlight helps your body produce vitamin D. Aim for about 15-30 minutes of sun exposure at least twice a week, depending on your skin type and geographical location.
Add foods rich in vitamin D into your diet, such as fatty fish, egg yolks, fortified dairy products, and mushrooms exposed to sunlight.
If getting enough vitamin D from sunlight and diet is challenging, consider taking vitamin D supplements. The National Institutes of Health recommends a daily intake of 600-800 IU (International Units) for most adults.
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