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Vitamin D: Why Is It Important For Your Health?

Vitamin D is essential for maintaining a myriad of bodily functions, notably bone health, immune regulation, and neurological function.

Vitamin D

Why is vitamin D important for health?

Vitamin D, often referred to as the “sunshine vitamin,” is vital for various aspects of health. It functions not only as a nutrient but also as a hormone, playing an essential role in the normal functioning of each cell, including those in the brain and the immune system.1

Vitamin D is important because it aids in bone health by regulating the body’s calcium and phosphate levels, which are needed for bone growth and mineralisation. It influences gene regulation, contributes to immune system health, and supports muscle function.2, 3, 4

Different types of vitamin D

There are several variations of vitamin D, with D3 (cholecalciferol) being the form produced in the skin upon sunlight exposure, and D2 (ergocalciferol) typically found in fortified foods and supplements. The body converts these into the active form, calcitriol, which is necessary for many physiological processes.5, 6

Guidelines and sources of vitamin D

Recommendations usually suggest increasing sun exposure or taking supplements, especially for individuals at risk of vitamin D deficiency, such as those living in colder or less sunny climates, the elderly, those with darker skin tones, and those who spend a lot of time indoors. Specific amounts vary but often range from 400 IU to upwards of 2000 IU daily, determined by individual circumstances and health conditions.3, 7

vitamin d

Precautions should be taken to not overdose on vitamin D, as excessive levels can cause harm, such as calcium deposition in tissues or abnormal heart rhythms. It is also advisable to seek guidance from a healthcare professional to obtain a dosage tailored to one’s specific needs, especially when considering higher dosages.8


Healthypedia FAQ

Vitamin D, often referred to as the "sunshine vitamin," is vital for various aspects of health. It functions not only as a nutrient but also as a hormone, playing an essential role in the normal functioning of each cell, including those in the brain and the immune system.

Vitamin D is important because it aids in bone health by regulating the body's calcium and phosphate levels, which are needed for bone growth and mineralisation. It influences gene regulation, contributes to immune system health, and supports muscle function.

There are several variations of vitamin D, with D3 (cholecalciferol) being the form produced in the skin upon sunlight exposure, and D2 (ergocalciferol) typically found in fortified foods and supplements.

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