Did you know that one BILLION people worldwide are deficient in Vitamin D?
Closer to home in America, at least 50% of children under 12 years of age are either insufficient or deficient in this essential nutrient.
You could almost say that we have a pandemic of Vitamin D deficiency!
As we currently approach the darker months in the Northern Hemisphere, now is the perfect time to be aware of the signs, symptoms and risk factors for this common deficiency.
What is Vitamin D?
Vitamin D is one of the most complex and fascinating vitamins that our body needs. The ways that our body gets Vitamin D and subsequently metabolizes this substance are truly unique.
Aptly called the Sunshine Vitamin, sunlight initially triggers our body to produce Vitamin D in the skin. Thereafter, Vitamin D undergoes complicated metabolic processes in the kidneys and liver to turn into its active form (Vitamin D3, also called cholecalciferol).
Once in its activated state, cholecalciferol doesn’t merely behave as a vitamin. In fact, it doubles as a steroid hormone, performing many functions throughout your body.
What Foods Contain Vitamin D?
Vitamin D is found predominantly in animal-based products, including:
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Oily fish, such as mackerel, tuna and salmon (a 6 oz serving of salmon provides more than 600 IU of Vitamin D),
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Egg yolk,
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Cheese,
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Beef liver,
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Fish oil supplementation.
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However, smaller amounts of Vitamin D can also be found in fortified grain products and UV-radiated mushrooms.
Why Is Vitamin D Important?
Vitamin D is probably most famous for its role in building strong bones. This important vitamin helps to regulate calcium and phosphorus in the blood; two essential minerals needed for maintaining a healthy bone mass.
In a severe scenario, lack of Vitamin D can cause a disease called rickets. This is a devastating disorder whereby the bone tissue fails to fully mineralize, leading to soft, bendy bones and abnormalities in the skeletal structure.
Most people in the Western world won’t develop a deficiency that is extreme enough to cause rickets, however suboptimal Vitamin D levels can still affect our bone formation to a lesser degree.
Aside from the vital bone-building power of Vitamin D, recent research shows us that it also assists with a vast range of other functions within the human body, spanning cell growth, immunity, neuromuscular activities and reduced inflammation.
In a broad sense, chronic Vitamin D deficiency can increase your risk of numerous diseases, including:
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Heart disease,
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Some cancers (particularly bowel),
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Asthma (in children),
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Cognitive impairment (in elderly people),
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Mental health issues (including depression and schizophrenia).
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On the positive side, getting plenty of Vitamin D can help to prevent:
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Glucose intolerance,
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Type 1 and Type 2 diabetes,
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High blood pressure,
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(Possibly) Multiple Sclerosis,
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Hip fracture and broken bones
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Osteopenia and osteoporosis