Which of the following observations is an example of a positive correlation?
A. When teenage girls increase their intake of iron-rich foods, the percentage of the girls who have iron-deficiency decreases.
B. When a group of 6-year-old children increase their physical activity level to 60 minutes a day, the children's muscle mass increases.
C. When older adults increase their daily intake of vitamin D, the percentage of the adults that develops infections decreases.
D. When a population consumes more fruits and vegetables, the percentage of people in that population with scurvy decreases.
Answer: B
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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 e. Tolerable Upper Energy Limit
A typical diet in the United States consists of which of these molecules in greatest abundance?
A. carbohydrates B. protein C. fat
How should babies be fed in the first year of life?
What will be an ideal response?
Suzanne and Bob have noticed that Kelly, their 16-year-old daughter, has been losing weight lately. She exercises at the gym almost 4 hours a day and seems to be skipping meals. They discuss this with Kelly at the dinner table, but she says there is no problem and urges them to stop worrying. Before taking drastic steps, Suzanne and Bob call their pediatrician. They discuss what has been going on
with Kelly and begin to gather facts concerning disordered eating. Let's see how much they have learned by answering these questions. Kelly's parents suspect she is purging also. What complication may occur as a result? a. Hair loss b. Constipation c. Tearing of the esophagus d. Excessive sleeping e. Nail growth