Hair Loss

Vitamin deficiency causes hair loss?

People commonly inquire about vitamin deficiency in hair loss. Inclusion of vitamins in diet as a means to prevent or manage hair loss is necessary now because micro-nutrients are major elements in the normal hair follicle cycle.

Vitamin deficiencies and hair loss.

The role of nutrition and diet in treating hair loss represents a dynamic and growing area of inquiry.

A broad literature search was performed to compile published articles that study the relationship of hair loss with vitamins and minerals. Deficiency of micronutrients represent a modifiable risk factor associated with the development, prevention, and treatment of alopecia.

In this blog, we will try to understand the role of vitamins, such as vitamin A, vitamin B7, vitamin C, vitamin D and vitamin E in hair loss.

Supplementing these deficient micronutrients can improve premature hair fall.

Vitamin D

This vitamin is major contributor in hair growth due to its functional impact on our immune system.

Vitamin D deficiency and hair loss.

Its prudent to hair growth as it stimulates the hair follicles and helps maintain thickness of existing strands.

Testing done on patients with alopecia have indicated lower levels of vitamin D in comparison with people who do not have alopecia.

Certain medications can also affect vitamin D levels.

In review, authors analyzed a total of 14 studies that involved 2039 patients with alopecia. In which, mean serum vitamin D level in patients with alopecia was significantly lower than that in the non alopecia people.

Additional negatives of deficiency:

  • Changes in mood
  • High blood pressure
  • Fatigue
  • Chronic pain
  • Infertility
  • Muscle weakness
  • Loss of bone density

How to refill:

  • Take a vitamin D supplement. 
  • Eat foods high in vitamin D like avocado, eggs, chia seeds, fish, and nuts.
  • Safely increasing your time in the sun.

Vitamin B7 (Biotin)

Biotin is considered the optimal “hair and skin” vitamin. Not only is biotin great for hair and skin⁠—studies have shown it can keep your nails from becoming brittle or splitting or reduce blood sugar in people with diabetes. 

Vitamin B7 deficiency and hair loss.

A lack of biotin commonly occurs due to inherited conditions, such as a lack of biotin in the parent’s diet during pregnancy or via breast milk. Other causes for biotin deficiencies are smoking, antibiotics, chronic use of alcohol, and acne medication.

Deficiency in biotin can cause hair thinning and hair loss. Daily intake of biotin for adults is 30 micrograms, support hair, skin, and nails.

Additional negatives of deficiency:

  • Confusion or memory problems
  • Nausea
  • Muscle pain
  • Skin rash on the face

How to refill:

  • Take a biotin supplement and consume foods high in biotin, such as egg yolk, cheese, rice, various meats, and several different fruits and vegetables. 

Vitamin A

Vitamin A deficiency and hair loss.

Its fantastic for keeping your hair healthy, it also helps support a healthy immune system.

Vitamin A also helps skin glands make an oily substance called sebum. Sebum moisturizes the scalp and helps keep hair healthy.

Your hair needs vitamin A to stay moisturized and grow. Good sources include sweet potatoes, carrots, spinach, kale and some animal foods.

As a general rule, consuming too much or over-supplementing vitamin A can cause hair loss too, so keep check on your vitamin A diet.

Additional negatives of deficiency:

  • Dry skin
  • Dry eyes
  • Infertility
  • Diarrhea
  • Unbalanced immune system

How to refill:

  • For a vitamin A deficiency, you should try to ingest more foods high in vitamin A such as green, leafy vegetables, dark yellow or orange fruits and veggies, liver, eggs, and dairy products. 
  • If you have too much vitamin A in your system, take a look at what you are ingesting or possible medications/creams you may be using that would cause an increase in vitamin A levels. 

Vitamin E

Vitamin E deficiency and hair loss.

Vitamin E is an antioxidant that can prevent oxidative stress.

Majority patients reported increased levels of oxidative stress biomarkers and decreased levels of protective antioxidant enzymes during alopecia.

Antioxidant supplementation fundamentally reverses or control the stress and age-associated hair fall.

Additional negatives of deficiency:

  • Muscle weakness.
  • Slow reflexes.
  • Difficulty or unsteady walking.
  • Vision problems.

How to refill:

Apart from nutraceutical supplements, sunflower seeds, almonds, spinach and avocados are all good sources of vitamin E.

Vitamin C

Vitamin C deficiency and hair loss.

Similar to vitamin E, vitamin C is an antioxidant that can prevent oxidative stress.

Humans are naturally deficient in an enzyme called l-gulonolactone oxidase that is required for vitamin C synthesis, and should therefore take vitamin C through their diet.

Additional negatives of deficiency:

  • Lassitude
  • Weakness
  • Irritability
  • Weight loss
  • Myalgias and arthralgias

How to refill:

Citrus fruits, potatoes, tomatoes, green peppers, and cabbages have particularly high concentrations of vitamin C.

In nut shell, hair loss due to vitamin deficiency is common now days. Educating your self about cause is a smarter way to find the perfect solution.

Keep check on your vitamin levels !

Read our other blogs to understand the problem of hair loss.


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You can follow a few hair hygiene tips to make your hair less likely to fall out: Avoid hairstyles that pull on the hair - Avoid high-heat hair styling tools - Don't chemically treat or bleach your hair - Use a shampoo that's mild and suited for your hair - Use a soft brush made from natural fibers - Try low-level light therapy.

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