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Dr. Mercola’s Weekly Quiz

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1 What is the No. 1 supplement recommended by cardiologists for all patients?

  • Vitamin D
  • Magnesium
  • Selenium
  • CoQ10

    CoQ10 helps protect your mitochondrial membranes from oxidative damage and has been shown to be helpful for a number of health conditions rooted in mitochondrial dysfunction. Learn more.

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