Why is it important to vary intake of foods within the same food group from day to day?
What will be an ideal response?
Variety improves nutrient adequacy. A diet may have all of the virtues just described and still lack variety, if a person eats the same foods day after day. People should select foods from each of the food groups daily and vary their choices within each food group from day to day for several reasons. First, different foods within the same group contain different arrays of nutrients. Among the fruits, for example, strawberries are especially rich in vitamin C while apricots are rich in vitamin A. Second, no food is guaranteed entirely free of substances that, in excess, could be harmful. The strawberries might contain trace amounts of one contaminant, the apricots another. By alternating fruit choices, a person will ingest very little of either contaminant. Third, as the adage goes, variety is the spice of life. A person who eats beans frequently can enjoy pinto beans in Mexican burritos today, garbanzo beans in a Greek salad tomorrow, and baked beans with barbecued chicken on the week-end. Eating nutritious meals need never be boring.
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Explain how hunger and obesity often exist side by side in the same household (aka the poverty-obesity paradox).
What will be an ideal response?
Which of the following statements describes an association between nutrient intake and lactation?
a. Milk production is increased by higher fluid intake b. Ingestion of garlic may lead to an off-flavor of the milk c. Inadequate protein intake lowers the protein concentration of the milk d. The energy RDA for milk production calls for an additional 1000 kcalories per day
Cholecystokinin (CCK) is a hormone that ________.
A. decreases the excretion of sodium ions from kidneys B. enables glucose to enter muscle cells C. increases the production of salivary amylase D. stimulates the gallbladder to secrete bile into the small intestine
The main function of vitamins is to
What will be an ideal response?