Sources of Vitamin D:
Chinook Salmon, baked/broiled (4 oz - 411 IU* Vit D)
Shrimp, steamed/boiled (4 oz -162.39 IU Vit D)
Cod, baked/broiled (4 oz - 63.50 IU Vit D)
Egg, whole, boiled (1 each - 22.88 IU Vit D)
* IU = International Units
Direct (not behind a glass/window) sunlight.
Sunscreen reportedly prevents the skin from producing Vitamin D while out in the sun.
-> If a person with very fair, sunburn-prone skin isn't planning on being in the sun for a long time, and the rays aren't too intense (i.e. summer evenings), some recommend going without sunscreen so the skin can produce some vitamin D.
- The further a person is from the equator and the darker their skin, the longer sun exposure they need.
*antioxidants, such as those found in berries and brightly coloured fruits and vegetables, greatly boost the body's ability to handle sunlight without burning.
Vitamin D without calcium just passes through the body. If you take vitamin D in capsules for example, they also contain calcium.
The only way to reduce vitamin D in the body is to stop intake of vitamin D.
Vitamins are organic substances that can't be made by the body, so they have to be eaten. Exceptions to this are vitamin D, vitamin K, biotin, and folic acid. These vitamins are present in certain foods, but our bodies have other ways of obtaining them. skin and kidneys are involved in making vitamin D, and that good-guy bacteria in the intestines make vitamin K. Bacteria in the intestine also manufacture biotin and folic acid.
vitamin d
vitamin D
Vitamin D is produced by ultraviolet radiation on your skin. The UV light converts a precursor molecule to vitamin D.
Vitamin D is a fat-soluble vitamin, meaning it is able to be dissolved in fat.
Vitamin D helps the metabolizing of calcium and phosphorus in the body. Most people get enough of this with sunlight but the rest of people have to use supplements.
Vitamin D. The body produces vitamin D when sunlight (ultraviolet light) strikes the skin.
To measure vitamin D levels, you take a blood test called the 25-hydroxyvitamin D test (25(OH)D test). This test assesses the concentration of 25-hydroxyvitamin D in your bloodstream, which is the primary form of vitamin D circulating in the body. It helps determine if you have sufficient vitamin D levels, are deficient, or have excess amounts.
Vitamin D. It is made from cholesterol in response to extended exposure to sunlight.
So do I take Vitamin D everytime I eat a meal?