Discuss the adverse effects of free radicals
What will be an ideal response?
Free radicals attack. Occasionally, these free-radical attacks are helpful. For example, cells of the immune system use free radicals as ammunition in an "oxidative burst" that demolishes disease-causing viruses and bacteria. Most often, however, free-radical attacks cause widespread damage. They commonly damage the polyunsaturated fatty acids in lipoproteins and in cell membranes, disrupting the transport of substances into and out of cells. Free radicals also alter DNA, RNA, and proteins, creating excesses and deficiencies of specific proteins, impairing cell functions, and eliciting an inflammatory response. All of these actions contribute to cell damage, disease progression, and aging
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Which dietary source of niacin has the highest availability for absorption?
A) enriched bread products B) cereal grains C) ready-to-eat cereals D) meat
Mrs. Juarez is diagnosed with cirrhosis and has developed ascites. Her appetite is poor and she is losing weight. The nurse realizes that she is at risk for malnutrition and encourages Mrs. Juarez to:
a. eat four to six times per day. b. try to eat three large meals per day. c. consume a liquid nutrition supplement with each meal. d. drink more fruit juice.
Which of the following factors is modifiable?
A) natural disasters B) political strife C) climate change D) overpopulation
________ is often lacking in the diets of older adults.
A. Selenium B. Iodine C. Calcium D. Sodium