Dark skinned people, older individuals and those who are overweight or obese; tend to have much lower levels of vitamin D in their body.
Vitamin D is a group of fat-soluble secosteroids, the two major physiologically relevant forms of which are vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). Vitamin D without a subscript refers to either D2 or D3 or both.
There are two basic types of vitamin D. Ergosterol is the basic building block of vitamin D in plants. Cholesterol is the basic building block of vitamin D in humans. When ultraviolet light from the sun hits the leaf of a plant, ergosterol is converted into ergocalciferol, or vitamin D2. In just the same way, when ultraviolet light hits the cells of our skin, one form of cholesterol found in our skin cells-called 7-dehydrocholesterol-can be converted into cholecalciferol, a form of vitamin D3.
In the life of a plant, the ergocalciferol form of vitamin D2 serves to accomplish most of the desired purposes that were intended for this substance. In the life of a human, however, cholecalciferol is not the final intended form for this vitamin. In order for our bodies to come up with the fully active form of vitamin D3, further metabolism is required.
Melting chocolate in a microwave is so simple-it does away with the need for a double boiler. Microwave it at 50% (medium) for 2 ½ minutes.
Calcium not only builds strong bones, but it also helps to prevent osteoporosis. Yes, milk is a great source of calcium, but so are foods like green leafy vegetables, yogurt, cheese, seaweed, oranges and beans.
My five-year-old grandson was looking through some old photos when he noticed his grandfather in a special army uniform. “What kind of costume is that?” he asked. “That’s not a costume,” his grandfather growled. “Men have died for that uniform.” The boy looked up and said, “So you stole it, then?”
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