Doctor's Note

Be sure to check out my other videos on medications, and don’t miss all my videos on nutrition myths.

Also, check out my associated blog posts for more context: Amla: Indian gooseberries vs. cancer, diabetes, and cholesterolIs Caffeinated Tea Really Dehydrating?Stool Size and Breast Cancer Risk Treating PMS with SaffronIncreasing Muscle Strength with Fenugreek; and Cinnamon for Diabetes,

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  • Michael Greger M.D.

    Please feel free to post any ask-the-doctor type questions here in the comments section and I’d be happy to try to answer them. Be sure to check back for the other videos on medications and don’t miss all the videos on nutrition myths. And there are 1,449 subjects covered in the rest of my videos–please feel free to explore them!

  • BPCveg

    Thanks Dr. Greger for another outstanding video. With this fabulous website, you have distinguished yourself as one of the greatest public educators on nutrition!

    Some of those who are intrigued by the topic of this video may also wish to read some of the work of Dr. James Duke (, who has done painstaking work for years to try to tabulate all of the phytochemicals in food plants and herbs. He has written several excellent popular books and has even made his extensive phythochemical database freely available to all (see:

  • BPCveg

    Don’t you think that the problem of phythochemical variability is solved by using standardized herbal formulas?

    • DrDons

      Standardization would help. However as Dr. Greger mentions the goal is to eat a variety of whole plants, spices and herbs. Supplements are fine but shouldn’t be the focus. Remember the amount of information on antioxidants and good things in foods is changing all the time. Compare what we know now vs what we knew in 1980 and imagine what we will learn in the next decades. While it is interesting and useful to look at the science and let it guide us we have to remember that we are dealing with complicated metabolic processes performing in complex/adaptive systems so the science should be taken with a grain of salt. In the meantime keep up with the latest in nutrition by staying tuned to

  • hcdr

    Great video. There are many claims of exotic animal products too (bear bile, fermented snakes, etc) that we’d like to believe have no merit to them, due to the dismal treatment of animals, and effects of species elimination, in this trade. Are there any studies you know of to support or refute these kinds of treatments?

    • Kim Churchman

      If it would save my life, I would refuse to use bear bile. Terrible thing to do a wild, freedom-loving animal. God help us please and soon.

  • Rcaiken

    Wouldn’t it be interesting and possibly important to understand the reasons these plant secondary metabolites are useful as medications in humans?  What is the function they have in the plants that make them? Perhaps if we knew that analogue we could better search for new medications or, better, know what whole plant foods to include in our dietary mix to avoid developing certain diseases.

  • Jason

    Are there any foods you would suggest to help with wound healing after surgery

  • grsr3

    What is your opinion of Saw Palmetto on prostate health??

  • craig ward

    what cures tinnitus, anything

    • Ascorbate, antihistamine or anything that dries up mucus in your ears?

  • GeoffB

    Is there any evidence on the effectiveness of Pacific Yew tea (made sustainably from the leaves of that Yew tree, not the bark) in treating or reversing cancers?

  • Dawn

    Dear Dr. Greger,
    Is there a natural plant based remedy for the fungus that lives under people’s toe nail? Is there any plant based way to strengthen the body to fight off such an attack? I have read that the fungus is athlete’s foot fungus that is present everywhere and that sometimes it gets under a toenail if the bodies ability to fight infection is compromised? Is there a way to prevent this by eating certain plants?
    Thank you for all you do to help so many!!!

    • Timt

      Dear Dawn,

      Great question i have athlete’s foot fungus under my right little toe.

      Hope someone can reply to us about this.

      Thank you and much appreciated.