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Health Benefits of Vitamin D: Cancer Fighter, Immune Booster, and Bone Builder

Blog Post Header Image - Health Benefits of Vitamin D. Image of scrabble pieces spelling out: "Vitamin D"

Vitamin D may be one of the most beneficial but overlooked substances in the human body. It is also one of the most common deficiencies we see in our patients in our Functional Medicine practice at The Center for Fully Functional® Health. In this article, we’re covering the many health benefits of vitamin D.

Why Vitamin D matters

1. Vitamin D is responsible for building bone. 

It regulates the balance of calcium and phosphorus in the blood, which helps with the healthy remodeling of bone. Calcium supplementation alone without adequate vitamin D levels will have little effect on osteoporosis. “Rickets” is a bone disease characterized by bending and weakening of bones.

The recommended daily allowance (“RDA”) of Vitamin D is the amount required to prevent this deficiency disease in most people. However, (optimal) levels of Vitamin D may be required to prevent or treat osteoporosis. An article in the Journal of the American Medical Association in 2005 estimated that increasing the serum Vitamin D level to 44 (double the level required to prevent rickets) would reduce fractures in women by 50%.

Health Benefits of Vitamin D. Vitamin D is an immune booster. Image of a flower in the sun.

2. Vitamin D is an immune booster. 

Vitamin D induces the production of a chemical called “cathelicidin” which is a potent antimicrobial. The evidence seems to indicate that Vitamin D may speed recovery from or prevent viral illnesses like the flu. It increases the ability of macrophages (immune cells) to “kill” foreign invaders in the body.

3. Vitamin D is active against cancer. 

In 2008, the American Association for Cancer Research reported that increasing the Vitamin D level in the blood to 50 could prevent as much as 83% of breast cancer. There is no commercially available drug with this level of risk reduction. Adequate Vitamin D levels have also been shown to prevent ovarian, colon, and several other cancers.

4. Vitamin D is active in many other diseases. 

Adequate Vitamin D levels have been shown to be beneficial in preventing heart attacks in men, multiple sclerosis, and type I diabetes. Interestingly, adolescent girls with higher Vitamin D levels were found to have increased jump height and velocity in sports. Lower blood levels are also seen in patients with Alzheimer’s dementia, depression, and cardiovascular disease.

Image of a woman standing in the sun with her arms out as it relates to: Natural Sources of Vitamin D.

Natural Sources of Vitamin D: Where do we get it?

Natural Vitamin D is obtained from exposure to sunlight or (in small amounts) from the food we eat. Once in the body, it must be activated in the kidneys to the usable form, Calcitriol. At our office in Carmel, Indiana, we see virtually 100% of patients tested who are deficient due to our northern latitude, lack of winter sunlight, and concerns for skin cancer, which lead to sunscreen use and covering the body, which prevents sun exposure. 

Because Vitamin D is active at several locations in the body and is chemically similar to steroids, it is technically a hormone rather than a vitamin. Like all hormones, it should be measured in the blood and replaced with a specific goal level in mind. At The Center for Fully Functional® Health, we would love to partner with you in your health, measure your Vitamin D level, and provide the best, most well-absorbed, and purest Vitamin D3 supplements to optimize your health.

Check out our article on 24 Essential Nutrients and Their Food Sources, to find out which foods are a good source of Vitamin D.

You can book an appointment by clicking here. We are also happy to speak with you at (317) 989-8463, Monday-Thursday, from 8AM – 5PM Eastern time.

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The Center for Fully Functional Health® is led by a team of award-winning, internationally recognized physicians, committed to providing personalized, life-changing care.

40 North Rangeline Rd. Carmel, IN 46032