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Weekly Health Quiz: Sunscreens, Mattresses and Cellphones


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 The following is not a healthy source of dietary fat and should be avoided:

  • Olive oil
  • Canola oil

    Not all fats have the same effects on your body, and that the fats most commonly found in processed foods, such as corn oil and canola oil, are among the very worst. Healthy dietary fats are natural and unprocessed. Examples include seeds, nuts, butter, olives, avocado and coconut oil. Learn more.

  • Butter
  • Coconut oil


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