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What Vitamin D is Good For?

Vitamin D benefits

A lot of people ask what vitamin D is good for all the time because of the long list of benefits associated with it.

It is different from all other vitamins and trace elements in many ways.

First, it is a steroid hormone. Also, it is called “the sunshine vitamin” because our bodies produce it when the skin gets exposed to the sunlight.

On the other hand, sun exposure is not enough to produce all our needs of it. Therefore, it is necessary to get more of it via diet or supplements. In fact, it only exists in high amounts in several foods. This vitamin’s deficiency is very common.

What is vitamin D good for in the human body? That is what we will discuss in detail.

Is Vitamin D Good for Hair?

Close up smiling woman taking white round pill, holding water glass in hand, happy young female taking supplement, daily vitamins for hair and skin, natural beauty, healthy lifestyle

Yes, it is good for hair.

Studies show that vitamin D deficiency is one of the main reasons for hair loss. It is essential for the proper growth of hair follicles. When there is a lack of its levels in the body, it impairs the growth of new hair follicles.

In addition, alopecia can occur due to the same reason. Alopecia is an autoimmune disease that causes bald batches all over the body, especially the scalp, and can occur in both men and women.

A study on women between 18 and 45 years old found that the main reason for different hair loss patterns including alopecia is vitamin D deficiency.

The deficiency can occur due to many reasons including not getting enough sun exposure, wearing sunscreens, and not consuming foods rich in the vitamin.

So, in a nutshell, is vitamin D good for hair? Yes, absolutely! It is one of the best supplements for your hair.

Is Vitamin D Good for Skin?

Vitamin D for skin

Yes, it is good for skin. In fact, its deficiency is one of the main risk factors for acne. Researchers still try to find the link between vitamin D deficiency and skin health. The most common explanation is that this vitamin is vital for our immune system. Therefore, when our immunity is low, skin problems, including acne, occur.

A study in 2014 found that symptoms of nodulocystic acne were more severe in people who have lower levels of the vitamin. Another study found that acne improved significantly when the participants started taking vitamin D supplements orally.

But how is it good for skin?

First of all, it is beneficial for skin health because of its antimicrobial properties. Therefore, if the main cause of acne is bacterial, using it topically can relieve or even treat the condition.

Besides, it is a powerful anti-inflammatory agent. Therefore, it can relieve the inflammatory symptoms of acne when you increase your intake.  
It is also great in treating and preventing recurrent acne, which is usually red and inflamed.

So, in conclusion, is vitamin D good for skin? Yes, absolutely!

What is Vitamin D Good for in the Human Body?

Here are some of the most common benefits of this crucial vitamin in the human body.


A beautiful pregnant woman exposed to sunlight

Is vitamin D good for pregnancy? Yes, it is. In fact, pregnant women need 10 micrograms of it daily.

Pregnant women need more calcium during the fall and winter seasons. Therefore, from September to March, women need to take all their needs via supplements. They also need to consume foods in this crucial vitamin such as oily fish and eggs.

Vitamin D is responsible for regulating the calcium and phosphate amounts in our bodies. Calcium and phosphate are crucial for the health of our bones, teeth, and muscles, which are all affected during pregnancy. Also, taking enough helps in reducing the risk of preterm birth, low birth weight, and pre-eclampsia.

Several studies also suggest that low levels during pregnancy can lead to postpartum depression. It is a type of depression that occurs after giving birth.


Vitamin D for nails

Is vitamin D good for your nails? Yes, it is.

Nutritional deficiencies are one of the main causes of nail peeling, cracking, and other problems. Vitamin D plays a main role in keeping the integrity of the nails. Therefore, when it is deficient, it leads to nail problems.

It is responsible for calcium absorption and regulating its levels in the blood. Calcium is necessary for the proper health of your nails.

If you have peeling nails, it may indicate that you have vitamin D deficiency.


Blood glucometer, lancet and lancing tool with test strip and prescription pills in the background on a gray slate for checking blood sugar levels for diabetics.

Is vitamin D good for diabetes? Yes, it is.

Many studies suggest that there is a direct link between diabetes mellites type 2 and the vitamin. People who suffer from insulin resistance and vitamin D deficiency may have a higher risk of developing diabetes mellites.  

Also, diabetics and pre-diabetics have a higher tendency to have low level of this important vitamin than non-diabetics.

In type 2 diabetes, the pancreatic cells do not function properly. They do not produce enough insulin to control blood sugar levels completely. People who have adequate levels of the vitamin in their systems may fight the development of diabetes. It can activate specific pancreatic receptors, which enhance the function of the pancreas.    

One study published in the European Journal of Endocrinology found that taking vitamin Dsupplements for 6 months has a great impact on preventing the development of diabetes. All the 96 participants in this study were newly diagnosed or at high risk of developing diabetes type 2. The results showed that supplementation can improve insulin sensitivity and production.


Vitamin D pills dropped from bottle on green background. Flat lay, top view. Health care and medical concept.

An Italian study on the effects of the different types of foods, vitamins, trace elements, and eating patterns founds that low vitamin D levels in our bodies can increase the risk of stroke.

Vitamin D helps in improving the inner linings of the blood vessels. Over time, it helps the blood to flow in the blood vessels. The proper blood flow reduces inflammations and prevents cardiac problems such as strokes and heart attacks.

Another study explored the relationship between high blood pressure and vitamin D levels. In this study, tiny sensors were used to notice the changes in the blood vessels at a cellular level. The researchers injected vitamin D3 into the blood vessel cells. They found that it has healing properties and can reverse the damages caused to the heart and blood vessels due to hypertension.

So, in short, is vitamin D good for heart? Yes, it is crucial for heart health.


Vitamin D for eyes health

Is vitamin D good for eyes’ health? Yes, it is crucial for our eyes.

First, it is essential for the proper tear function. Tears keep the eyes moist and maintain their health.

 It also reduces the risk of many eye diseases including:

  • Macular degeneration
  • Cataracts
  • Glaucoma

Vitamin D deficiency can harm the eyes in many ways. In addition to increasing the risk of the previous diseases, it can lead to other problems including:

  • Diabetic retinopathy
  • Uveitis
  • Dry eye syndrome

Depression and Mental Health

Close up of woman hands holding a pills.

Depression, especially seasonal depression during winter, is associated with vitamin D deficiency.

Studies found that people who suffer from depression usually have low levels of the vitamin in their blood.

Depression due to the vitamin’s deficiency can occur in many health problems including:

  • Gout
  • Chronic spinal cord injuries
  • Stroke
  • Multiple sclerosis

A small high-quality study found that taking vitamin D supplements can improve depression symptoms in nearly all groups of people.

Bottom Line

Vitamin D benefits for health are numerous. This fat-soluble vitamin reduces depression and improves your strength. Besides, it is crucial for your skin, hair, nails, bones, and heart.

It is the sunshine vitamin, so it is important to get more sun exposure daily. Also, consume foods rich in it to get your needs before trying supplements.

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