Practice Quiz

Registered Dietitian

Category - Nutrition Care

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Which of the following is true for cataracts formed in the eye during aging? (Choose all that apply.)
  1. Cataracts related to aging are caused by oxidative stress from free radicals or prolonged exposure to ultraviolet light.
  2. The formation of cataract can be reversed by dietary antioxidants.
  3. Vitamin C supplementation of 500 mg per day has been found to prevent cataracts.
  4. None of the above
Explanation
Answer: A - Cataracts are caused by oxidative stress from free radicals or prolonged exposure to ultraviolet light. Although dietary antioxidants show promise in delaying cataract formation, there is no evidence that they may prevent them. The effects of vitamin C supplementation on cataract formation are unknown.
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