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Some Facts about Vitamin D!

Vitamin D is a fat-soluble vitamin that is naturally present in very few foods but available as a dietary supplement. It is also produced endogenously when ultraviolet rays from sunlight strike the skin and trigger vitamin D synthesis. Vitamin D obtained from sun exposure, food, and supplements is biologically inert and must undergo two hydroxylations in the body for activation. The first occurs in the liver and converts vitamin D to calcidiol. The second occurs primarily in the kidney and forms the physiologically active calcitriol.


Very few foods in nature contain vitamin D. The flesh of fatty fish and fish liver oils are among the best sources. Small amounts of vitamin D are found in beef liver, cheese, and egg yolks. Vitamin D in these foods is primarily in the form of vitamin D3 and its metabolite. Mushrooms with enhanced levels of vitamin D2 from being exposed to ultraviolet light under controlled conditions are also available.


Most people meet at least some of their vitamin D needs through exposure to sunlight. Season, time of day, length of day, cloud cover, smog, skin melanin content, and sunscreen are among the factors that affect UV radiation exposure and vitamin D synthesis.


Groups at Risk of Vitamin D Inadequacy

  • Breastfed Infants

  • Older Adults

  • People with limited sun exposure.

  • People with inflammatory bowel disease and other conditions causing fat malabsorption.

  • People who are obese or who have undergone gastric bypass surgery

Vitamin D toxicity can cause non-specific symptoms such as anorexia, weight loss, polyuria, and heart arrhythmias. More seriously, it can also raise blood levels of calcium which leads to vascular and tissue calcification, with subsequent damage to the heart, blood vessels, and kidneys.


Always make sure to have your doctor check your vitamin levels and other vitals! They are always happy to help and check for you! They want you to be healthy as much as you want yourself to be. It's important to take care of yourself!

© 2019 by Breya Christian. Proudly created with Wix.com

Leah  Buckbee

CMA, LMT, MMA

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