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Michael Greger MD

Michael Greger MD

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A founding member and Fellow of the American College of Lifestyle Medicine, Michael Greger, MD, is a physician, author, and internationally recognized speaker on nutrition, food safety, and public health issues. He has lectured at the Conference on World Affairs, testified before Congress, and was invited as an expert witness in the defense of Oprah Winfrey in the infamous "meat defamation" trial. He is a graduate of Cornell University School of Agriculture and Tufts University School of Medicine. Currently Dr. Greger serves as the Director of Public Health and Animal Agriculture at The Humane Society of the United States. His latest book is How Not to Die. More than a thousand of his nutrition videos are freely available at NutritionFacts.org, with new videos and articles uploaded every day.

Blog Entries by Michael Greger MD

The Saturated Fat Studies: Buttering Up the Public

Michael Greger MD | September 29, 16 at 05:00 AM | Health

Read More: American College of Cardiology, American Heart Association, animal fat, animal products, butter, cake, cardiovascular disease, cardiovascular health, Center for Science in the Public Interest, cheese, chicken, dairy, dietary guidelines, European Food Safety Authority, fat, heart disease, heart health, ice cream, industry influence, Institute of Medicine, junk food, meat, Mexico, milk, National Dairy Board, National Dairy Promotion Board, pie, processed foods, safety limits, saturated fat, trans fat

Time magazine's cover exhorting people to eat butter could be viewed as a desperate attempt to revive dwindling print sales, but they claimed to be reporting on real science--a systematic review and meta-analysis published in a prestigious journal that...

Which Dietary Factors Affect Breast Cancer Most?

Michael Greger MD | September 27, 16 at 05:00 AM | Health

Read More: Adventist Health Studies, alcohol, American Institute for Cancer Research, beverages, bladder cancer, breast cancer, cancer, cancer survival, cardiovascular disease, cardiovascular health, China Study, endometrial cancer, esophageal cancer, Forks Over Knives, greens, heart disease, heart health, kidney cancer, lifespan, Lifestyle medicine, liver cancer, lung cancer, mortality, oral cancer, plant protein, plant-based diets, smoking, stomach cancer, tobacco, vegans, vegetables, vegetarians

One of my favorite cancer-specific charities, the American Institute for Cancer Research, lauds the China Study and the documentary Forks Over Knives, with which they share the same bottom-line message: The healthiest diets are those that revolve around whole...

Ciguatera Poisoning & Chronic Fatigue Syndrome

Michael Greger MD | September 22, 16 at 05:00 AM | Health

Read More: AMA, brain health, CDC, chronic fatigue syndrome, ciguatera, cooking methods, depression, fish, food poisoning, foodborne illness, mental health, neurotoxins, New York City, pain, pets, polymyositis, seafood, sexual health, sexual transmission, zoonotic disease

Ciguatera is one of the most common forms of food poisoning, which occurs after the consumption of fish contaminated with neurotoxins produced by certain microalgae that build up the food chain. Just a few bites can be sufficient to...

How to Mitigate and Prevent Crohn's Disease with Diet

Michael Greger MD | September 20, 16 at 05:00 AM | Health

Read More: animal fat, animal products, animal protein, artificial sweeteners, autoimmune diseases, brain disease, broccoli, carboxy-methyl cellulose, colon health, Crisco, Crohn's disease, dairy, dishwashing detergent, fiber, fruit, greens, gut flora, Harvard, Harvard Nurses' Health Study, inflammation, inflammatory bowel disease, junk food, maltodextrin, meat, plant-based diets, plantains, Polysorbate 80, processed foods, Splenda, ulcerative colitis, vegans, vegetables, vegetarians, xanthan gum

Crohn's disease is an autoimmune disorder that affects more than a million Americans. It is an inflammatory bowel disease in which the body attacks the intestines. There is currently no known cure for Crohn's disease; current research focuses on...

Should Pregnant Women Drink Cow's Milk?

Michael Greger MD | September 15, 16 at 05:00 AM | Health

Read More: acne, adolescence, animal products, breast cancer, cancer, children, chronic diseases, dairy, endometrial cancer, estrogen, farm animals, fertility, hormones, IGF-1, men's health, menopause, milk, organic, ovarian cancer, plant-based diets, pregnancy, prostate cancer, puberty, reproductive health, twins, uterine cancer, vegans, vegetarians, women's health

Foods of animal origin in general naturally contain hormones, but cow's milk may be of particular concern. The hormones naturally found even in organic cow's milk may have played a role in studies that found a relationship between dairy...

Estrogen in Meat, Dairy, and Eggs

Michael Greger MD | September 13, 16 at 05:00 AM | Health

Read More: animal products, birth control pills, cancer, carcinogens, chicken, children, dairy, eggs, endocrine disruptors, estrogen, Europe, farm animals, feed additives, fish, hormones, industrial toxins, meat, milk, persistent organic pollutants, poultry, steroids, water, women's health, xenoestrogens

Estrogen hormones can be thousands of times more estrogenic than typical endocrine-disrupting chemicals. Dietary exposure to natural sex steroids (in meat, dairy, and eggs) is "therefore highly relevant in the discussion of the impact of estrogens on human development...

What to Eat to Protect Against Kidney Cancer

Michael Greger MD | September 8, 16 at 05:00 AM | Health

Read More: animal products, antioxidants, bacon, beef, blood pressure, cancer, carcinogens, celery, chicken, collard greens, dairy, deli meat, diabetes, eggs, fermented foods, fiber, greens, hot dogs, hypertension, industry influence, kale, kidney cancer, kidney disease, kidney health, meat, NIH-AARP study, nitrate, nitrite, nitrosamines, obesity, phytonutrients, plant-based diets, pork, processed foods, processed meat, sausage, smoking, tobacco, vegetables, vitamin C

58,000 Americans are diagnosed with kidney cancer every year, and 13,000 die. And the numbers have been going up. Approximately 4 percent of cases are hereditary, but what about the other 96 percent? The only accepted risk factor has...

Paleo Diet May Undermine Benefit of CrossFit Exercise

Michael Greger MD | September 6, 16 at 05:00 AM | Health

Read More: animal products, animal protein, apples, Atkins diet, beans, beef, blood pressure, burgers, cancer, candy, cardiovascular disease, cardiovascular health, chicken, cholesterol, dairy, diabetes, doughnuts, eggs, exercise, fat, fish, fruit, grains, hamburgers, HDL cholesterol, heart disease, heart health, hypertension, insulin, junk food, LDL cholesterol, legumes, low-carb diets, meat, nutrition myths, nuts, oatmeal, paleolithic diets, pasta, plant-based diets, pork, processed foods, protein, salmon, sugar, vegans, vegetables, vegetarians, weight loss

Much of the low-carb and paleo reasoning revolves around insulin. To quote a paleo blogger, "carbohydrates increase insulin, the root of all evil when it comes to dieting and health." So the logic follows that because carbs increase insulin,...

Side-Effects of Aspartame on the Brain

Michael Greger MD | September 1, 16 at 05:00 AM | Health

Read More: artificial sweeteners, aspartame, beverages, brain health, coffee, depression, dopamine, Europe, FDA, Harvard, headaches, insomnia, Kaiser Permanente, mental health, MIT, mood, NIH-AARP study, Nutrasweet, processed foods, saccharin, safety limits, seizures, serotonin, soda, sugar, suicide, Sweet and Low, sweeteners, tea

The National Institutes of Health AARP study of hundreds of thousands of Americans followed for years found that frequent consumption of sweetened beverages, especially diet drinks, may increase depression risk among older adults. Whether soda, fruit-flavored drinks, or iced...

Chicken Big: The Correlation Between Poultry and Obesity

Michael Greger MD | August 30, 16 at 05:00 AM | Health

Read More: animal products, calories, chicken, exercise, fruit, grains, meat, obesity, plant-based diets, poultry, vegans, vegetables, vegetarians

Vegetarians have considerably lower obesity rates compared to meat-eaters, but why? Is it because they're not eating meat or because they're eating more plants? Or maybe they're just eating fewer calories or exercising more? A study out of the...

The Role of Caffeine in Artery Function

Michael Greger MD | August 23, 16 at 05:00 AM | Health

Read More: alcohol, antioxidants, beverages, caffeine, cancer, cardiovascular disease, cardiovascular health, cholesterol, coffee, cream, exercise, grapes, heart disease, heart health, IGF-1, milk, phytonutrients, prostate cancer, red wine, soda, sweeteners, tea, water, wine

There are dietary guidelines for food, but what about for beverages? A Beverage Guidance Panel was "assembled to provide guidance on the relative health and nutritional benefits and risks of various beverage categories." They ranked them from one to...

How Big Food Twists the Science

Michael Greger MD | August 18, 16 at 05:00 AM | Health

Read More: alcohol, beverages, burgers, cancer, candy, chicken, chronic diseases, doughnuts, Exponent Inc., FDA, hamburgers, industry influence, junk food, Kraft, lung cancer, National Confectioners Association, Phillip Morris, potato chips, potatoes, processed foods, smoking, soda, tobacco, ultra-processed foods, Whitecoat project

Just like mosquitos are the vectors of spread for malaria, a landmark article published last year in one of the most prestigious medical journals, Lancet, described large food corporations as the vectors of spread for chronic disease. Unlike "infectious...

Introducing the Kempner Rice Diet

Michael Greger MD | August 16, 16 at 05:00 AM | Health

Read More: blood pressure, cardiovascular disease, cardiovascular health, cholesterol, chronic diseases, diabetes, Dr. Caldwell Esselstyn, Dr. Walter Kempner, eye disease, eye health, fat, fruit, grains, heart disease, heart failure, heart health, hypertension, kidney failure, kidney health, lifespan, low-carb diets, mortality, plant-based diets, protein, rice, salt, smoking, stroke, vegetables, vision

Franklin Delano Roosevelt brought us through the Great Depression and World War II. Who knows how history would have been different had he not died in his fourth term as President from a massive stroke. In the following days...

Preventing and Treating Low Back Pain With Diet

Michael Greger MD | August 11, 16 at 05:00 AM | Health

Read More: adolescence, angiography, back pain, cardiovascular disease, cardiovascular health, children, cholesterol, chronic diseases, erectile dysfunction, heart disease, heart health, lactic acid, lower back pain, nerve health, pain, sciatica, standard American diet

Low back pain became one of the biggest problems for public health systems in the Western world during the second half of the 20th century. The lifetime prevalence of low back pain is reported to be as high as...

What About All the Sugar in Fruit?

Michael Greger MD | August 9, 16 at 05:00 AM | Health

Read More: antioxidants, apples, berries, beverages, blood pressure, blood sugar, bread, fat, fiber, fructose, fruit, fruit juice, glycemic index, high fructose corn syrup, hypertension, insulin, intestinal health, juice, liver disease, liver health, pancakes, phytonutrients, soda, strawberries, sugar, water, weight loss

If the fructose in sugar and high fructose corn syrup has been considered "alcohol without the buzz" in terms of the potential to inflict liver damage, what about the source of natural fructose, fruit? If you compare the effects...

New DVD, New Annual Talk, New Live Q&A's and HOW NOT TO DIE now out in Spanish

Michael Greger MD | August 4, 16 at 05:00 AM | Health

Read More: updates

Decades ago, when I was still studying biophysics at Cornell's Agriculture School, I reached out to Professor Gertrude Buehring about her landmark findings that a cancer-causing virus was infecting the U.S. meat and dairy supply. What could I do...

How to Eliminate 90 Percent of Heart Disease Risk

Michael Greger MD | August 2, 16 at 05:00 AM | Health

Read More: aging, blood pressure, cardiovascular disease, cardiovascular health, cholesterol, chronic diseases, diabetes, exercise, heart disease, heart health, hypertension, INTERHEART study, Lifestyle medicine, nutrition myths, plant-based diets, smoking, statins, stroke

Medical myths and dogmas die hard. Researchers creating a new body of knowledge for prevention and control of heart disease had to disprove a bunch of doozies. For example, we used to think that heart disease, high cholesterol and...

Inhibiting Platelet Activation with Tomato Seeds

Michael Greger MD | July 28, 16 at 05:00 AM | Health

Read More: allergies, antioxidants, aspirin, blood clots, cancer, cardiovascular disease, cardiovascular health, cholesterol, fruit, grapefruit, grapefruit juice, heart disease, heart health, inflammation, kiwi fruit, mortality, oxidative stress, platelets, strawberries, stroke, tomato juice, tomato sauce, tomatoes, vegetables

In the prevention of cardiovascular disease, the consumption of fruits and vegetables is crucial. Preventing the oxidation of cholesterol may be one of the mechanisms by which fruits and vegetables reduce the risk of heart attacks and strokes. However,...

Preventing Alzheimer's Disease with Diet

Michael Greger MD | July 26, 16 at 05:00 AM | Health

Read More: alcohol, Alzheimer's disease, animal fat, beans, brain disease, brain health, China, cognition, dairy, dementia, fish, fruit, meat, Mediterranean diet, nuts, saturate fat, vegetables

Up to half of Alzheimer's cases may be attributable to just seven risk factors shown in my video, Preventing Alzheimer's with Lifestyle Changes, which include diabetes, high blood pressure, obesity, exercise, smoking, depression, and mental exercise; and that's not...

Preventing Alzheimer's with Lifestyle Changes

Michael Greger MD | July 21, 16 at 05:00 AM | Health

Read More: Alzheimer's disease, blood pressure, brain disease, brain health, cardiovascular disease, cardiovascular health, cholesterol, cognition, dementia, depression, diabetes, exercise, heart disease, heart health, hypertension, mortality, smoking, stroke

It's safe to say that Alzheimer's disease research is in a "state of crisis." For the past two decades, over 73,000 research articles have been published, averaging 100 papers per day, yet little clinical progress has been made. The...