Who won in a head-to-head test of nutrition knowledge––doctors or patients?
How Much Do Doctors Know About Nutrition?
Below is an approximation of this video’s audio content. To see any graphs, charts, graphics, images, and quotes to which Dr. Greger may be referring, watch the above video.
Humanity’s diet is the single leading cause of death, exacting an even greater health burden than smoking. This makes sense since we are what we eat. Literally, physically. If we continue to rebuild our body every day with shoddy materials, it’s no wonder we run into trouble. For example, not eating enough fruits and vegetables is blamed for millions of deaths every year. We should eat fruits and vegetables as if our lives depended on it, because in a way, it appears they do.
Most Americans may be suffering from diet-related diseases, yet most are not being educated about nutrition from their doctors. Maybe that’s actually a good thing, given how little doctors tend to know about nutrition? Physicians are typically seen as trustworthy sources of nutrition by the general public, but in a head-to-head test of nutrition knowledge, doctors versus patients, though physicians should be more knowledgeable about nutrition than their patients, these results suggest that this is not necessarily true. And we all know how little the general public knows about nutrition.
The American diet is the number one cause of death in the United States, yet doctors average less than 20 hours of nutrition training––and that’s mostly like the biochemistry of vitamins. The amount of clinical nutrition training they get may be less than five hours. Take cardiology, for example. Dr. Ornish’s landmark lifestyle heart trial asked the question: “Can lifestyle changes reverse coronary artery disease?” and the answer was a resounding yes. If just that tidbit alone was understood and internalized by internists, think how many lives could be saved from our leading cause of death and disability. Yet 90 percent of surveyed cardiologists reported receiving little or no nutrition education during their cardiology training. There appears to be insufficient nutrition training in medical training across the board—a global deficiency. The low-hanging fruit in medicine remains on the vine.
And for those doctors who say they don’t have time, physicians don’t need to do their own diet counseling any more than they need to perform their own x-rays or blood draws. But they must recognize the role nutrition plays in disease, communicate it clearly to the patient, and refer the patient appropriately.
The diet that Dr. Ornish used to help reverse the progression of heart disease was whole-food, plant-based nutrition––a diet primarily, but not exclusively, composed of fruits, vegetables, whole grains, and legumes. Why isn’t there more widespread acknowledgement of the power of plants in the medical community? One potential reason is that the science has yet to make its way into the teaching materials. Yes, Dr. Ornish made this discovery decades ago, but sometimes it can take decades for medical practice to catch up, even when millions of lives are at stake.
Nowadays, it would be unthinkable not to address patients’ smoking, because it’s just been incorporated into the standard of care. The evidence on nutrition has yet to be similarly lionized, but “[t]his should not prevent thoughtful and caring clinicians from applying safe and effective nutritional interventions that are not ‘ahead of the evidence’ but only ahead of the [published] guidelines.” Ignorance of nutrition is no longer defensible.
There are a growing number of resources for those who missed out in med school. Doctors can get board certified in lifestyle medicine. There are some great websites out there. Like PCRM’s “Nutrition Guide for Clinicians.” More great websites.
Yes, it would be nice not to be a hypocrite and eat more healthfully yourself, rather than just learning about healthier diets. But that shouldn’t stop anyone from recommending it, if only because it is the only diet that has ever been shown to help reverse the progression of the number one killer of men and women. So, people should not be denied such knowledge. Now look, it’s their body, their choice. Just like many smokers will continue to smoke, many will continue to eat junk, but this should not prevent clinicians from advising smoking cessation and a healthier diet. Patients have the right to be told the truth. Not mentioning this powerful dietary tool is an act of withholding crucial information necessary for fully informed consent
Unfortunately, out of ignorance, what many doctors are telling their patients to eat may be killing them. Some doctors used to smoke with their patients. In fact, most doctors themselves smoked, just like most doctors today continue to eat foods that are contributing to our epidemics in dietary disease. Until doctors are taught more about nutrition, their advising people about their diet could be considered a form of physician-assisted suicide.
Please consider volunteering to help out on the site.
- Devries S. A global deficiency of nutrition education in physician training: the low hanging fruit in medicine remains on the vine. Lancet Planet Health. 2019;3(9):e371-e372.
- Maisel M. Nutritional approaches to chronic illness. In: Bakhru A, ed. Nutrition and Integrative Medicine. 1st ed. CRC Press; 2018:19-38.
- GBD 2017 Diet Collaborators. Health effects of dietary risks in 195 countries, 1990-2017: a systematic analysis for the Global Burden of Disease Study 2017. Lancet. 2019;393(10184):1958-1972.
- Morton KF, Pantalos DC, Ziegler C, Patel PD. A place for plant-based nutrition in US medical school curriculum: a survey-based study. Am J Lifestyle Med. 2022;16(3):271-283.
- Mogre V, Amoore BY, Gaa PK. A scoping review of nutrition education interventions to improve competencies, lifestyle and dietary habits of medical students and residents. J Nutr Sci. 2023;12:e31.
- Lazarus K, Weinsier RL, Boker JR. Nutrition knowledge and practices of physicians in a family-practice residency program: the effect of an education program provided by a physician nutrition specialist. Am J Clin Nutr. 1993;58(3):319-325.
- Crowley J, Ball L, Hiddink GJ. Nutrition in medical education: a systematic review. Lancet Planet Health. 2019;3(9):e379-e389.
- Devries S, Willett W, Bonow RO. Nutrition education in medical school, residency training, and practice. JAMA. 2019;321(14):1351-1352.
- Adams KM, Butsch WS, Kohlmeier M. The state of nutrition education at US medical schools. J Biomed Educ. 2015(1):357627
- Devries S, Agatston A, Aggarwal M, et al. A deficiency of nutrition education and practice in cardiology. Am J Med. 2017;130(11):1298-1305.
- Barnard ND. Ignorance of nutrition is no longer defensible. JAMA Intern Med. 2019;179(8):1021-1022.
- Rahman V. Time to revamp nutrition education for physicians. Perm J. 2019;23:19-052.
- Storz MA. Is there a lack of support for whole-food, plant-based diets in the medical community? Perm J. 2018;23:18-068.
- Ha B. The power of plants: is a whole-foods, plant-based diet the answer to health, health care, and physician wellness? Perm J. 2019;23:19-003.
- Lessem A, Gould SM, Evans J, Dunemn K. A whole-food plant-based experiential education program for health care providers results in personal and professional changes. J Am Assoc Nurse Pract. 2020;32(12):788-794.
- Storz MA. Will the plant-based movement redefine physicians’ understanding of chronic disease? New Bioeth. 2020;26(2):141-157.
- Hart J. Clinician self-care: doctors who adopt healthy lifestyle behaviors help themselves and their patients. Altern Complement Ther. 2020;26(2):67-69.
- The advertising of cigarettes. JAMA. 1948;138(9):652.
- Stanford Research into the Impact of Tobacco Advertising. Collection: More Doctors Smoke Camels. tobacco.Standford.edu. 2024.
- Frame LA. Nutrition, a tenet of lifestyle medicine but not medicine? Int J Environ Res Public Health. 2021;18(11):5974.
- US Burden of Disease Collaborators, Mokdad AH, Ballestros K, et al. The state of us health, 1990-2016: burden of diseases, injuries, and risk factors among us states. JAMA. 2018;319(14):1444-1472.
Motion graphics by Avo Media
Below is an approximation of this video’s audio content. To see any graphs, charts, graphics, images, and quotes to which Dr. Greger may be referring, watch the above video.
Humanity’s diet is the single leading cause of death, exacting an even greater health burden than smoking. This makes sense since we are what we eat. Literally, physically. If we continue to rebuild our body every day with shoddy materials, it’s no wonder we run into trouble. For example, not eating enough fruits and vegetables is blamed for millions of deaths every year. We should eat fruits and vegetables as if our lives depended on it, because in a way, it appears they do.
Most Americans may be suffering from diet-related diseases, yet most are not being educated about nutrition from their doctors. Maybe that’s actually a good thing, given how little doctors tend to know about nutrition? Physicians are typically seen as trustworthy sources of nutrition by the general public, but in a head-to-head test of nutrition knowledge, doctors versus patients, though physicians should be more knowledgeable about nutrition than their patients, these results suggest that this is not necessarily true. And we all know how little the general public knows about nutrition.
The American diet is the number one cause of death in the United States, yet doctors average less than 20 hours of nutrition training––and that’s mostly like the biochemistry of vitamins. The amount of clinical nutrition training they get may be less than five hours. Take cardiology, for example. Dr. Ornish’s landmark lifestyle heart trial asked the question: “Can lifestyle changes reverse coronary artery disease?” and the answer was a resounding yes. If just that tidbit alone was understood and internalized by internists, think how many lives could be saved from our leading cause of death and disability. Yet 90 percent of surveyed cardiologists reported receiving little or no nutrition education during their cardiology training. There appears to be insufficient nutrition training in medical training across the board—a global deficiency. The low-hanging fruit in medicine remains on the vine.
And for those doctors who say they don’t have time, physicians don’t need to do their own diet counseling any more than they need to perform their own x-rays or blood draws. But they must recognize the role nutrition plays in disease, communicate it clearly to the patient, and refer the patient appropriately.
The diet that Dr. Ornish used to help reverse the progression of heart disease was whole-food, plant-based nutrition––a diet primarily, but not exclusively, composed of fruits, vegetables, whole grains, and legumes. Why isn’t there more widespread acknowledgement of the power of plants in the medical community? One potential reason is that the science has yet to make its way into the teaching materials. Yes, Dr. Ornish made this discovery decades ago, but sometimes it can take decades for medical practice to catch up, even when millions of lives are at stake.
Nowadays, it would be unthinkable not to address patients’ smoking, because it’s just been incorporated into the standard of care. The evidence on nutrition has yet to be similarly lionized, but “[t]his should not prevent thoughtful and caring clinicians from applying safe and effective nutritional interventions that are not ‘ahead of the evidence’ but only ahead of the [published] guidelines.” Ignorance of nutrition is no longer defensible.
There are a growing number of resources for those who missed out in med school. Doctors can get board certified in lifestyle medicine. There are some great websites out there. Like PCRM’s “Nutrition Guide for Clinicians.” More great websites.
Yes, it would be nice not to be a hypocrite and eat more healthfully yourself, rather than just learning about healthier diets. But that shouldn’t stop anyone from recommending it, if only because it is the only diet that has ever been shown to help reverse the progression of the number one killer of men and women. So, people should not be denied such knowledge. Now look, it’s their body, their choice. Just like many smokers will continue to smoke, many will continue to eat junk, but this should not prevent clinicians from advising smoking cessation and a healthier diet. Patients have the right to be told the truth. Not mentioning this powerful dietary tool is an act of withholding crucial information necessary for fully informed consent
Unfortunately, out of ignorance, what many doctors are telling their patients to eat may be killing them. Some doctors used to smoke with their patients. In fact, most doctors themselves smoked, just like most doctors today continue to eat foods that are contributing to our epidemics in dietary disease. Until doctors are taught more about nutrition, their advising people about their diet could be considered a form of physician-assisted suicide.
Please consider volunteering to help out on the site.
- Devries S. A global deficiency of nutrition education in physician training: the low hanging fruit in medicine remains on the vine. Lancet Planet Health. 2019;3(9):e371-e372.
- Maisel M. Nutritional approaches to chronic illness. In: Bakhru A, ed. Nutrition and Integrative Medicine. 1st ed. CRC Press; 2018:19-38.
- GBD 2017 Diet Collaborators. Health effects of dietary risks in 195 countries, 1990-2017: a systematic analysis for the Global Burden of Disease Study 2017. Lancet. 2019;393(10184):1958-1972.
- Morton KF, Pantalos DC, Ziegler C, Patel PD. A place for plant-based nutrition in US medical school curriculum: a survey-based study. Am J Lifestyle Med. 2022;16(3):271-283.
- Mogre V, Amoore BY, Gaa PK. A scoping review of nutrition education interventions to improve competencies, lifestyle and dietary habits of medical students and residents. J Nutr Sci. 2023;12:e31.
- Lazarus K, Weinsier RL, Boker JR. Nutrition knowledge and practices of physicians in a family-practice residency program: the effect of an education program provided by a physician nutrition specialist. Am J Clin Nutr. 1993;58(3):319-325.
- Crowley J, Ball L, Hiddink GJ. Nutrition in medical education: a systematic review. Lancet Planet Health. 2019;3(9):e379-e389.
- Devries S, Willett W, Bonow RO. Nutrition education in medical school, residency training, and practice. JAMA. 2019;321(14):1351-1352.
- Adams KM, Butsch WS, Kohlmeier M. The state of nutrition education at US medical schools. J Biomed Educ. 2015(1):357627
- Devries S, Agatston A, Aggarwal M, et al. A deficiency of nutrition education and practice in cardiology. Am J Med. 2017;130(11):1298-1305.
- Barnard ND. Ignorance of nutrition is no longer defensible. JAMA Intern Med. 2019;179(8):1021-1022.
- Rahman V. Time to revamp nutrition education for physicians. Perm J. 2019;23:19-052.
- Storz MA. Is there a lack of support for whole-food, plant-based diets in the medical community? Perm J. 2018;23:18-068.
- Ha B. The power of plants: is a whole-foods, plant-based diet the answer to health, health care, and physician wellness? Perm J. 2019;23:19-003.
- Lessem A, Gould SM, Evans J, Dunemn K. A whole-food plant-based experiential education program for health care providers results in personal and professional changes. J Am Assoc Nurse Pract. 2020;32(12):788-794.
- Storz MA. Will the plant-based movement redefine physicians’ understanding of chronic disease? New Bioeth. 2020;26(2):141-157.
- Hart J. Clinician self-care: doctors who adopt healthy lifestyle behaviors help themselves and their patients. Altern Complement Ther. 2020;26(2):67-69.
- The advertising of cigarettes. JAMA. 1948;138(9):652.
- Stanford Research into the Impact of Tobacco Advertising. Collection: More Doctors Smoke Camels. tobacco.Standford.edu. 2024.
- Frame LA. Nutrition, a tenet of lifestyle medicine but not medicine? Int J Environ Res Public Health. 2021;18(11):5974.
- US Burden of Disease Collaborators, Mokdad AH, Ballestros K, et al. The state of us health, 1990-2016: burden of diseases, injuries, and risk factors among us states. JAMA. 2018;319(14):1444-1472.
Motion graphics by Avo Media
Republishing "How Much Do Doctors Know About Nutrition?"
You may republish this material online or in print under our Creative Commons licence. You must attribute the article to NutritionFacts.org with a link back to our website in your republication.
If any changes are made to the original text or video, you must indicate, reasonably, what has changed about the article or video.
You may not use our material for commercial purposes.
You may not apply legal terms or technological measures that restrict others from doing anything permitted here.
If you have any questions, please Contact Us
How Much Do Doctors Know About Nutrition?
LicenseCreative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
Content URLDoctor's Note
For more about medical ethics, see:
- How Doctors Responded to Being Named a Leading Killer
- Find Out If Your Doctor Takes Drug Company Money
- Spin Doctors: How the Media Reports on Medicine
- Are Doctors Misleading Patients About Statin Risks and Benefits?
If you haven't yet, you can subscribe to our free newsletter. With your subscription, you'll also get notifications for just-released blogs and videos. Check out our information page about our translated resources.