Guidelines from the Institute of Medicine increased the recommended dietaryallowance (RDA) of vitamin D to 600 international units (IU) for everyone aged 1-70,and raised it to 800 IU for adults older than 70 to optimize bone health. The safeupper limit was also raised to 4,000 IUs. Treatment for vitamin D deficiency involves getting more vitamin D - through dietand supplements. Although there is no consensus on vitamin D levels required foroptimal health - and it likely differs depending on age and health conditions - aconcentration of less than 20 nanograms per milliliter is generally consideredinadequate, requiring treatment. People with a body mass index of 30 or greater often have low blood levels of vitamin D. You are obese. Vitamin D is extracted from the blood by fat cells, altering its release into the circulation. Your digestive tract cannot adequately absorb vitamin D. Certain medical problems, including Crohn's disease, cystic fibrosis, and celiac disease, can affect your intestine's ability to absorb vitamin D from the food you eat. Your kidneys cannot convert vitamin D to its active form. As people age their kidneys are less able to convert vitamin D to its active form, thus increasing their risk of vitamin D deficiency. Some studies show that older adults with darker skin are at high risk of vitamin D deficiency. You have dark skin. The pigment melanin reduces the skin's ability to make vitamin D in response to sunlight exposure. Your exposure to sunlight is limited. Because the body makes vitamin D when your skin is exposed to sunlight, you may be at risk of deficiency if you are homebound, live in northern latitudes, wear long robes or head coverings for religious reasons, or have an occupation that prevents sun exposure. This is likely if you follow a strict vegetarian diet, because most of the natural sources are animal-based, including fish and fish oils, egg yolks, cheese, fortified milk, and beef liver. Vitamin D deficiency can occur for a number of reasons: You don't consume the recommended levels of the vitamin over time. Presentation on theme: "Causes of Vitamin D Deficiency"- Presentation transcript:
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |