Vitamin D Functions and Interactions Quiz
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Questions and Answers

What role does Vitamin D play in relation to calcium absorption and storage?

  • Increases the absorption of vitamin E supplements
  • Helps in the absorption and storage of calcium (correct)
  • Stimulates the absorption of phosphorus
  • Prevents the deposit of calcium in kidneys and arteries
  • Which nutrient is required to keep Vitamin E in its metabolically active form?

  • Vitamin B3
  • Glutathione
  • Vitamin C (correct)
  • Selenium
  • What is the consequence of high levels of beta-carotene on vitamin E serum levels?

  • Decreases serum vitamin E levels (correct)
  • Has no impact on serum vitamin E levels
  • Causes vitamin E toxicity
  • Increases serum vitamin E levels
  • How does Vitamin C interact with Vitamin A to reduce toxic effects?

    <p>Helps keep Vitamin A in its active form</p> Signup and view all the answers

    Which nutrient increases the absorption of Vitamin D supplements?

    <p>Vitamin K</p> Signup and view all the answers

    What impact can Vitamin D supplements have on magnesium levels over time?

    <p>Cause magnesium deficiency</p> Signup and view all the answers

    What is a potential issue when there is an excess intake of vitamin E in relation to vitamin K?

    <p>Vitamin E may interfere with the bodily activities of vitamin K</p> Signup and view all the answers

    What might happen if there is excessive supplemental intake of vitamin A in its retinal form?

    <p>Vitamin A can lead to copper deficiency</p> Signup and view all the answers

    How does high levels of vitamin C supplementation potentially affect copper levels?

    <p>Vitamin C eventually leads to copper deficiency</p> Signup and view all the answers

    In what way does excess supplemental intake of vitamin A (retinal form) impact the clotting ability of the blood?

    <p>Vitamin A may cause hypothrombinemia</p> Signup and view all the answers

    What can high levels of vitamin C potentially do to the positive effect on iron?

    <p>Vitamin C counteracts its positive effect on iron</p> Signup and view all the answers

    How does vitamin K status get impacted by high doses of vitamin E?

    <p>High doses of vitamin E decrease the absorption of vitamin K</p> Signup and view all the answers

    Which nutrient does Zinc interfere with in terms of absorption?

    <p>Vitamin D</p> Signup and view all the answers

    What is the main focus of the study by Hasam Mohajeri et al. (2015)?

    <p>Vitamin D interactions</p> Signup and view all the answers

    In the context of iron absorption, what effect does calcium have?

    <p>Inhibits iron absorption</p> Signup and view all the answers

    What is the impact of vitamin A on iron absorption in humans according to Walczyk et al. (2003)?

    <p>No effect on iron absorption</p> Signup and view all the answers

    What is the focus of the research by Lynch (2000) in terms of nutrient interactions?

    <p>Vitamin D and calcium interactions</p> Signup and view all the answers

    According to Sandström (2001), what do micronutrient interactions primarily affect?

    <p>Absorption and bioavailability</p> Signup and view all the answers

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