Vitamin D, known as the “sunshine vitamin” because it is synthesized through exposure to the sun, regulates the blood level of calcium and phosphorus and their absorption through the intestines. It also aids in bone formation, helping build a complete and strong skeleton.
Sunlight is the most important source of vitamin D. You only need about 15 minutes of exposure each day to get enough vitamin D. If you have restricted or inadequate exposure to sunlight, you may want to consider seeing a physician for vitamin D supplements.
Dark-skinned and the elderly produce vitamin D much less effectively than fair-skinned people and the young.
It is important to maximize the intake of vitamin D through additional sources, like cod liver oil, salmon, tuna fish, and sardines. Mushrooms, cheese, and eggs are also very good sources of the vitamin, in addition to catfish, mackerel, and eel.
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