In which circumstance should nutrient supplements in amounts consistent with the RDA be taken?
a. when energy intake is high
b. when more than one gallon of water is consumed per day
c. when an illness improves your appetite
d. when a vegan diet is followed
e. when food is obtained primarily at grocery-stores
d
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Indicate whether the statement is true or false
Structurally, vitamin D is derived from ____.?
A) ?a steroid B) ?an amino acid C) ?a fatty acid D) ?calcium
Which of the following does not have an Acceptable Macronutrient Distribution Range (AMDR)?
1.Carbohydrates 2.Vitamins 3.Proteins 4.Fats 5.All of these choices have an AMDR value
Which of the following hormones is secreted by the thyroid gland when blood levels of calcium are too high?
A. calcitonin B. thyroxin C. parathyroid hormone D. T3