A Testimonial from Dr. Ornish’s Alzheimer’s Progression Reversal Study

What does improving the cognition and function of Alzheimer's patients with lifestyle medicine actually translate to in terms of human impact?

If you missed Friday’s video, check out Can Alzheimer’s Disease Be Reversed with a Plant-Based Diet? ( ).

For more on Alzheimer’s disease, see these videos:
• How Not to Age ( )
• Controversy Around FDA’s Approval of Biogen Alzheimer’s Drug, Aducanumab ( )
• Alzheimer’s and Atherosclerosis of the Brain ( )
• How to Prevent Alzheimer’s with Diet ( )

For more on Dr. Dean Ornish’s work, check out his book Undo It! ( ). And these videos ( ); for more on heart disease, see these videos ( ).

I have more than 500 videos on plant-based diets. You can check them out here ( ).

The best available balance of scientific evidence suggests that the healthiest way to eat is a vitamin B12-fortified ( ) diet centered around whole plant foods. I go into specifics of the Daily Dozen foods I recommend in Dr. Greger’s Daily Dozen ( ). For a more thorough dive into the science on these foods, check out my New York Times bestselling book, How Not to Die ( ).

Get our free Plant-Based Living Series ( ). This resource is a weekly email series that gives you simplified takeaways and actionable tips on healthy eating. Whether you're new to a whole food, plant-based lifestyle or would benefit from reminders on some of the key aspects of healthy evidence-based nutrition, this series is for you. Expanding on our popular Evidence-Based Eating Guide, this free series features even more tips and information, and you’ll get it delivered straight to your inbox on a weekly basis. (Don't have your own copy of our Evidence-Based Eating Guide? You can download it as a digital and printable PDF ( ).)

New subscribers to our e-newsletter always receive a free gift. Get yours here: .

Have a question about this video? Leave it in the comment section at and someone on the NutritionFacts.org team will try to answer it.

Want to get a list of links to all the scientific sources used in this video? Click on Sources Cited at . You’ll also find a transcript and acknowledgements for the video, my blog and speaking tour schedule, and an easy way to search (by translated language even) through our videos spanning more than 2,000 health topics.

Thanks for watching. I hope you’ll join in the evidence-based nutrition revolution!
-Michael Greger, MD FACLM

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Dave McKinnon

  • @AndrewPawley11 says:

    I love this channel!

  • @NutritionFactsOrg says:

    If you missed Friday’s video, check out Can Alzheimer’s Disease Be Reversed with a Plant-Based Diet? (https://www.youtube.com/watch?v=7VrfbBN3Um8)

  • @simmiedavissimmiesings8185 says:

    I am so happy for this man. I’m beginning to have signs.

  • @ChristineBeltran says:

    So encouraging. ❤

  • @adnaloy9025 says:

    Dr. Greger really presents this information so well! He seems so happy and excited in all the videos! I love it!

  • @jimayers4397 says:

    I am hoping that there is regression in the underlying condition because these positive outcomes could be from improvement in general health or reversal of a co-condition like vascular dementia, which is not Alzheimer’s.

  • @lorah3005 says:

    👍 Whole food plant based for the environment and health; vegan for the victims!

  • @frumpd63 says:

    The power of plants, ladies and gentlemen.

  • @chrystalthornton1502 says:

    Would like to know what type of diet these patients followed before the intervention. SAD, heavy animal based, lots of sugar? Did it matter?

    • @JasonJrake says:

      Almost certainly high in animal products. Anyone over 40 and under 100 in the United States was taught in school (elementary all the way to med school) that you can measure the health of a culture by the percentage of animal flesh/protein in their diet. Obviously we didn’t all buy into it, but that was the textbook rule of thumb for most of the 20th century sadly.

      That’s why no sense like Atkins/Paleo takes off so easily here on a cycle, and plant based gets ignored despite all of the good evidence.

  • @serpentsforhair says:

    Very interested in this topic! Thanks for sharing about the correlation between diet and cognitive decline/improvement!

  • @robertkribs9513 says:

    I’ll finish my comment after I finish wiping my tears! :-J This is powerful stuff!

  • @lenguyenngoc479 says:

    The study is too good to be true. We need 200 or 1000 participants however its such a good news to know this for sure

  • @kgold5962 says:


  • @MrPhliptrick says:

    As if the evidence for the prevention of strokes, MS and M. Parkinson weren’t enough, this is the perfect time for Dr. Ornish to release the results of such a thorough trial… I’ve just started working as a neurologist last October and at the end of June I’ll give a presentation to our team of (senior) neurologists at our clinic about the power of lifestyle medicine regarding neurological diseases. Thank you so much for spreading the word!

  • @dianeladico1769 says:

    From the study:
    A whole foods minimally-processed plant-based (vegan) diet, high in complex carbohydrates (predominantly fruits, vegetables, whole grains, legumes, soy products, seeds and nuts) and especially low in harmful fats, sweeteners and refined carbohydrates. It was approximately 14-18% of calories as total fat, 16-18% protein, and 63-68% mostly complex carbohydrates. Calories were unrestricted. Those with higher caloric needs were given extra portions.

    • @Jeffs60 says:

      The median plasma OxLDL-EO6 increased by 27% (P<0.01) in response to the low-fat, low-vegetable diet and 19% (P<0.01) in response to the low-fat, high-vegetable diet. Also, the Lp(a) concentration was increased by 7% (P<0.01) and 9% (P=0.01), respectively. 2004 study shows what a healthy diet can do.

  • @jeanneamato8278 says:

    I was crying for those who are getting their lives back, and for everyone who’ll have more of a future than they thought.

  • @wanda12411 says:

    Hi, totally agree with the studies results, I used to suffer from anxiety before I started a plant-based diet and after about three or four months, I noticed that my anxiety levels had decreased dramatically. It was amazing. I started the diet to lower my cholesterol, which it has, but it was a pleasant surprise to see my anxiety levels also decrease.

  • @KJSvitko says:

    Hospitals, doctors offices and schools should be places where good nutrition is taught and provided not places that contribute to disease and obesity. It is crazy the hospitals are feeding people the very food that caused the heart disease, high blood pressure or cancer that they are treating. Every person in the hospital should receive some nutrition education before being released. Every doctor visit should be an opportunity to educate patients about how food choices impacts their health outcomes. The fact that doctors do not get nutrition training as part of their training makes no sense. Medicare and Medicaid should require nutrition education as part of patient care. Focus should be on food choices. Fasting should be investigated as a treatment for disease.

    • @dianeladico1769 says:

      Couldn’t agree more. Every doctor I approached with my WFPB diet was indifferent at best, most were absolutely discouraging. One paid attention after I dropped three T2D meds and lowered a1c.
      That said, it’s not just the docs. All my family and friends have seen my improvement. Not one is interested in making any changes, including the one with T2, bad knees, heart trouble and is so big she can barely walk. You can lead a horse to water…

  • @WFPB_4_Life says:

    This is wonderful! ❣️

  • @sungheelee9358 says:

    What a timing. I am sharing this with my family.
    Thank you Dr. Greger and Dr. Ornish!

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