How is fiber thought to exert an influence over cancer of the colon?
What will be an ideal response?
Research studies suggest that a high-fiber diet protects against colon cancer. When a large study of diet and cancer examined the diets of more than a half million people in ten countries for several years, the researchers found an inverse association between dietary fiber and colon cancer. People who ate the most dietary fiber (35 grams per day) reduced their risk of colon cancer by 40 percent compared with those who ate the least fiber (15 grams per day). Importantly, the study focused on dietary fiber, not fiber supplements or additives, which lack valuable nutrients and phytochemicals that also help protect against cancer. Plant foods—vegetables, fruits, and whole-grain products—reduce the risks of colon and rectal cancers. Fibers may help prevent colon cancer by diluting, binding, and rapidly removing potential cancer-causing agents from the colon. In addition, soluble fibers stimulate bacterial fermentation of resistant starch and fiber in the colon, a process that produces short-chain fatty acids that lower the pH. These small fat molecules activate cancer-killing enzymes and inhibit inflammation in the colon.
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Nancy consumes fewer kcalories at 14 months than she did at 11 months. This change in appetite probably indicates that she is:
a. ill and needs medical attention. b. not as physically active now as when she was 11 months old. c. in a less rapid stage of growth now. d. becoming malnourished.
Trace minerals differ from major minerals in all of the following ways, EXCEPT:
a. their daily requirement is less than 100 milligrams. b. their safe range of intake is more narrow. c. they are found in smaller amounts in the body. d. they are less essential in human health. e. they include iodine and iron. f. all answers above are correct. g. no answer above is correct.
Todd has been overweight since childhood but as a college student has made a commitment to lose weight. He goes on the Dr. Atkins New Diet Revolution diet and after a few months switches to Weight Watchers. After 6 months, Todd has lost 12 pounds but is still overweight. He is discouraged he hasn't lost more weight and he goes to a fast-food restaurant and has two cheeseburgers and a milkshake
Let's see how knowledgeable you are regarding diets so you can effectively help Todd. Which mistake did Todd make when eating the cheeseburgers and shake? a. Allowing negative emotions to reduce self-control b. Wanting to improve appearance to get love and affection c. Not exercising to compensate for the extra calories d. Focusing on appearance e. Using appearance as a measure of self-worth
A peptic ulcer resides in the
a. stomach only. b. duodenum only. c. stomach or duodenum only. d. esophagus and stomach only.