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Answers to Critical Thinking Questions
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  1. To find colon cancer early if and when it occurs, a key recommendation is to receive regular examinations by a physician. A diet rich in fruits, vegetables, and whole grains, as well as regular exercise, may prevent the disease. Meeting vitamin D, calcium, selenium, and folate needs is also important. Things to limit or avoid are obesity, smoking, saturated fat, and processed red meat. These are just some of the possible recommendations for Karla.
  2. Foods that remain in the mouth, usually caught between the teeth, are a source of food that bacteria can metabolize. As a by-product of this metabolism, bacteria produce acids, which can decay tooth enamel, causing dental caries. Chewing sugar-free gum after meals decreases the risk of caries because chewing stimulates the secretion of saliva, which helps dislodge foods that remain in the mouth. Sugar-free gums also contain sugar substitutes, which bacteria cannot metabolize. In addition, saliva has a higher pH than the acids produced by bacterial metabolism. This helps neutralize the acids.







Contemporary Nutrition, 6eOnline Learning Center

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