Which of the following observations is an example of a positive correlation?
A. When members of a population consume fewer fruits and vegetables, their risk of high blood pressure increases.
B. When women gain less weight than average during pregnancy, the birthweights of their babies tend to be lower than average.
C. When a population's intake of green tea increases, the percentage of lung cancer cases in that population decreases.
D. When a group of children increases their physical activity levels, the percentage of the children who contract cold infections decreases.
Answer: B
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A. Pellagra B. Hemolysis C. Hemochromatosis D. Anemia
Complications immediately following obesity surgery often include all of the following except: a. dehydration
b. infection. c. high blood pressure. d. nausea. e. low blood glucose.
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A. fighting disease B. creating movement C. regulating cell processes D. sending chemical messages
Articles that appear in the Journal of the American Medical Association are reliable sources of health information because the editors
A. know the authors have already published articles in other scientific or medical journals. B. only publish articles written by scientists whose research is funded by various health-related associations. C. have other scientists review and react to the content of articles before publishing them. D. are trained to recognize and reject articles that include questionable findings.