Why are dark-skinned children who live in smoggy northern cities likely to develop rickets?
Sunlight supplies the needed vitamin D for most of the world's people. When ultraviolet (UV) light rays from the sun reach a cholesterol compound in human skin, the compound is transformed into a vitamin D precursor and is absorbed directly into the blood. Slowly, over the next day and a half, the liver and kidneys finish converting the inactive precursor to the active form of vitamin D. Like natural sunscreen, the pigments of dark skin protect against UV radiation. To synthesize several days' worth of vitamin D, dark-skinned people require up to 3 hours of direct sun (depending on the climate). Therefore, dark-skinned people and those who lack sufficient exposure to sunlight often lack vitamin D.
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Adverse drug effects happen more often within what age group?
a. the elderly b. middle-age people c. young adults d. teenagers e. children
What set of values is used to recommend the average kcalorie intake that maintains population groups in energy balance?
a. Estimated Energy Requirement b. Adequate Average Requirement c. Recommended Dietary Allowance d. Acceptable Energy Distribution Range
Sources of carbohydrate are
A) fats, oils, butter, and margarine. (source of lipids) B) fish, eggs, beef, pork, and poultry. C) cereals, fruits, vegetables, and milk. D) green leafy vegetables, seafood, and water.
Describe the appropriate medical nutrition therapy for pregnant women with diabetes