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Weekly Health Quiz: Vitamin D, Stress and Gratitude

WARNING!

This is an older article that may not reflect Dr. Mercola’s current view on this topic. Use our search engine to find Dr. Mercola’s latest position on any health topic.

1 Which of the following enhances vitamin D signaling and works synergistically with vitamin D to enhance your mitochondrial function?

  • Vitamin C
  • Quercetin
  • Glutathione
  • Melatonin

    Melatonin enhances vitamin D signaling and the two work synergistically to enhance your mitochondrial function. Learn more.

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