What is Vitamin D? Why is it important?

Medically Reviewed by Checkmark Medically Reviewed By: Dr. Sravanthi Sunkaraneni
What exactly is Vitamin D, and what role does it play in the body?
Vitamin D is a fat-soluble vitamin that helps the body absorb and maintain calcium and phosphorus. Therefore, it plays a major role in maintaining the strength of bones and also in the health of the immune system, cardiovascular system, etc. It is obtained in the diet as well as synthesised in the body in response to exposure to sunlight.

Vitamin D is among the 13 vitamins that our body needs for proper functioning. Vitamin D is a fat-soluble vitamin and can also be synthesized by the body.

Vitamin D helps the body to absorb Calcium and phosphorus that are essential for developing the structure and strength of your bones. Vitamin D also helps in improving the immune system, cardiovascular function, keep your respiratory system healthy and also helps in brain development.

Vitamin D is naturally found in fish-liver oils, fatty fish, egg yolks, mushrooms, and liver. However, the requirement of Vitamin D in the human body cannot be fulfilled by foods alone. A balanced approach to fulfill the body’s need for Vitamin D lies in the right amount of sun exposure along with right diet.

In the skin of humans, Vitamin D3 is photosynthesized by the action of solar ultraviolet (UV) B radiation on 7-dehydrocholesterol (as per Fieser 1959). Vitamin D2 is produced by ultraviolet irradiation of ergosterol, which occurs in molds, yeast, and higher-order plants.

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Disclaimer
Medical Science is an ever evolving field. We strive to keep this page updated. In case you notice any discrepancy in the content, please inform us at [email protected]. You can further read our Correction Policy here. Never disregard professional medical advice or delay seeking medical treatment because of something you have read on or accessed through this website or it's social media channels. Read our Full Disclaimer Here for further information.

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