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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

New DVD, "Platinum," and Research Training

Michael Greger MD | March 2, 17 at 05:00 AM | Health

Read More: Updates

My new DVD came out last week and is available as streaming video so you can start watching it immediately. In this new volume, I have videos on practical tips to improve brain function, cramps, and asthma; not to...

White Meat May Be as Cholesterol-Raising as Red

Michael Greger MD | February 28, 17 at 05:00 AM | Health

Read More: animal fat, animal products, animal protein, beef, beverages, blood sugar, burgers, cardiovascular health, chicken, cholesterol, Coca-Cola, cola, dairy, eggs, fat, fish, flexitarians, hamburgers, heart health, industry influence, lard, LDL cholesterol, meat, Pepsi, plant protein, plant-based diets, poultry, protein, red meat, saturated fat, soda, sugar, tofu, vegans, vegetables, vegetarians, veggie burgers, white meat

In light of recommendations for heart healthy eating from national professional organizations encouraging Americans to limit their intake of meat, the beef industry commissioned and co-wrote a review of randomized controlled trials comparing the effects of beef versus chicken...

Can You Eat Too Much Fruit?

Michael Greger MD | February 23, 17 at 05:00 AM | Health

Read More: antioxidants, berries, blood pressure, blueberries, breakfast cereal, cancer, diabetes, fiber, fructose, fruit, Harvard, high fructose corn syrup, insulin, LDL cholesterol, oxidative stress, prediabetes, safety limits, soda, stool size, sugar, vegetables

In my video If Fructose is Bad, What About Fruit?, I explored how adding berries to our meals can actually blunt the detrimental effects of high glycemic foods, but how many berries? The purpose of one study out of...

Foods Linked to ALS

Michael Greger MD | February 21, 17 at 05:00 AM | Health

Read More: algae, ALS, Alzheimer's disease, biomagnification, BMAA, dementia, Finland, fish, France, industrial pollutants, Lou Gehrig's disease, mercury, neurotoxins, oysters, Parkinson's disease, seafood

As explored in my video ALS (Lou Gehrig's Disease): Fishing for Answers, there may be a link in the consumption of the neurotoxin BMAA, produced by algae blooms, and increased risk of ALS. It now appears that BMAA could...

What Is the Cause of ALS?

Michael Greger MD | February 16, 17 at 05:00 AM | Health

Read More: ALS, Alzheimer's disease, biomagnification, blue-green algae, BMAA, brain disease, brain health, Canada, coconut milk, dementia, fish, Huntington's disease, Lou Gehrig's disease, mortality, multiple sclerosis, neurotoxins, oysters, paralysis, Parkinson's disease, seafood, seeds, shrimp

Lou Gehrig's disease, known as amyotrophic lateral sclerosis or ALS, strikes healthy, middle-aged people seemingly at random. Of the major neurodegenerative diseases, it has the least hope for treatment and survival. Although mental capabilities stay intact, ALS paralyzes people,...

Benefits of Nutritional Yeast to Prevent the Common Cold

Michael Greger MD | February 14, 17 at 05:00 AM | Health

Read More: animal studies, antibiotics, athletes, beta glucan, brewer's yeast, California, candy, chemotherapy, common cold, FDA, gout, heavy metals, immune function, inflammation, kidney stones, lead, mushrooms, nutritional yeast, purines, safety limits, shiitake mushrooms, side effects, uric acid, yeast

Natural immunomodulators that can help regulate our immune system without side-effects have been sought for centuries, and all the while they've been sitting in the produce aisle. Plants produce thousand of active compounds, many of which modulate our immune...

Benefits of Oatmeal for Fatty Liver Disease

Michael Greger MD | February 9, 17 at 05:00 AM | Health

Read More: alcohol, antioxidants, asthma, blood sugar, bread, breakfast, breakfast cereal, cancer, cardiovascular health, chemotherapy, cholesterol, cirrhosis, diabetes, exercise, fiber, fruit, grains, heart health, liver disease, liver health, mortality, nonalcoholic fatty liver disease, oatmeal, obesity, rice, smoking, vegetables, weight loss

If oatmeal is so powerful that it can clear up some of the ravages of chemotherapy just applied to the skin (see my video Oatmeal Lotion for Chemotherapy-Induced Rash), what might it do if we actually ate it? Oats...

Does Oatmeal Lotion Work?

Michael Greger MD | February 7, 17 at 05:00 AM | Health

Read More: alternative medicine, cancer, cetuximab, chemotherapy, complementary medicine, grains, oatmeal, oats, phytonutrients, rash, skin health

A review in the Journal of Drugs in Dermatology notes oatmeal has been used for centuries as a topical soothing agent on the skin to relieve itch and irritation in dermatology. Of course, that was coming from Johnson &...

What Not to Add to White Rice, Potatoes, or Pasta

Michael Greger MD | February 2, 17 at 05:00 AM | Health

Read More: animal fat, animal products, animal protein, Asia, cardiovascular disease, chicken, China, China Study, diabetes, fat, fish, fruit, fruit juice, grains, heart disease, insulin, Japan, meat, obesity, oils, pancreas health, pork, potatoes, prediabetes, rice, seafood, stroke, sugar, tuna, vegans, vegetarians

Rice currently feeds almost half the human population, making it the single most important staple food in the world, but a meta-analysis of seven cohort studies following 350,000 people for up to 20 years found that higher consumption of...

Why Is Milk Consumption Associated with More Bone Fractures?

Michael Greger MD | January 31, 17 at 01:18 PM | Health

Read More: adolescence, aging, animal studies, bone fractures, bone health, bone mineral density, brain disease, brain health, cancer, cardiovascular disease, children, dairy, fermented foods, galactose, galactosemia, Harvard, heart disease, inflammation, lactose, longevity, men's health, milk, mortality, osteoporosis, oxidative stress, women's health, yogurt

Milk is touted to build strong bones, but a compilation of all the best studies found no association between milk consumption and hip fracture risk, so drinking milk as an adult might not help bones, but what about in...

Are Sugar Pills Better than Antidepressant Drugs?

Michael Greger MD | January 26, 17 at 05:00 AM | Health

Read More: antidepressants, body fat, depression, diarrhea, exercise, FDA, Freedom of Information Act, industry influence, insomnia, lifespan, medications, mental health, mood, muscle health, nausea, placebo, placebo effect, Prozac, sexual dysfunction, sexual health, side effects, SSRI's, weight gain

We've learned that exercise compares favorably to antidepressant medications as a first-line treatment for mild to moderate depression (in my video Exercise vs. Drugs for Depression). But how much is that really saying? How effective are antidepressant drugs in...

Exercise as a Treatment for Depression

Michael Greger MD | January 24, 17 at 05:00 AM | Health

Read More: antidepressants, depression, exercise, lifestyle medicine, medications, mental health, mood, SSRI's, Zoloft

We've known for decades that even a single bout of exercise can elevate our mood, but could it be enough to be used as a treatment for major depression? We've known that physical activity has been associated with decreased...

Four Ways to Improve on the Mediterranean Diet

Michael Greger MD | January 19, 17 at 05:00 AM | Health

Read More: alcohol, antioxidants, beans, beverages, blood pressure, bread, breast cancer, cancer, cardiovascular disease, chronic diseases, diabetes, fruit, grains, grapes, greens, heart disease, hypertension, Mediterranean diet, nuts, obesity, olive oil, phytonutrients, plant-based diets, red wine, salt, saturated fat, seeds, sodium, stroke, vegetables, wine

The traditional Mediterranean diet can be considered mainly, but not exclusively, as a plant-based diet, and certainly not a whole foods, plant-based diet. Olive oil and wine can be considered essentially fruit juices. Even if one is eating a...

What Do All the Blue Zones Have in Common?

Michael Greger MD | January 17, 17 at 05:00 AM | Health

Read More: alcohol, animal fats, animal products, beans, beer, cancer, cardiovascular disease, dairy, eggs, exercise, fish, french fries, fruit, grains, heart disease, junk food, lifespan, meat, Mediterranean diet, mortality, nuts, olive oil, plant protein, plant-based diets, potato chips, potatoes, PREDIMED, processed foods, seafood, vegans, vegetables, vegetarians

What accounts for the benefits of a Mediterranean-style diet? An anatomy of health effects was published, and the single most important component was the high consumption of plant foods. In contrast, fish and seafood consumption, the only animal foods...

The Two Most Active Ingredients of the Mediterranean Diet

Michael Greger MD | January 12, 17 at 05:00 AM | Health

Read More: alcohol, almonds, Ancel Keys, animal fats, antioxidants, butter, cancer, cardiovascular disease, cardiovascular health, cookies, dairy, DNA damage, eggs, fat, fish, Harvard, Harvard Nurses' Health Study, hazelnuts, heart disease, heart health, lard, lifespan, longevity, meat, Mediterranean diet, mortality, nuts, olive oil, olives, oxidative stress, plant-based diets, PREDIMED, soda, stroke, vegetables, walnuts, wine, World Health Organization

Olives and nuts are plant foods, and as such, are packed with antioxidants, raising the antioxidant level of our bloodstream resulting in lower fat oxidation and free radical DNA damage, but what's happening inside people's arteries? Researchers measured the...

Benefits of Nuts for Stroke Prevention

Michael Greger MD | January 10, 17 at 05:00 AM | Health

Read More: American Heart Association, blood pressure, cardiovascular disease, cholesterol, chronic diseases, dairy, diabetes, fat, fruit, heart disease, hypertension, meat, Mediterranean diet, mortality, nuts, obesity, olive oil, PREDIMED, saturated fat, standard American diet, stroke, vegetables

In the PREDIMED study, from the Spanish "PREvencio ́n con DIeta MEDiterranea," a whopping 7,447 patients were randomized into three groups. These were folks at high risk for a heart attack, about half were obese, diabetic and most had...

The Mediterranean Diet or a Whole Food Plant-Based Diet?

Michael Greger MD | January 3, 17 at 05:00 AM | Health

Read More: alcohol, American Heart Association, brain disease, bread, butter, cancer, canola, cardiovascular disease, cholesterol, chronic diseases, dairy, Dr. Caldwell Esselstyn, Dr. Dean Ornish, exercise, fish, fruit, Greece, heart disease, Lyon Diet Heart Study, meat, Mediterranean diet, mortality, nuts, olive oil, omega-3 fatty acids, plant-based diets, PREDIMED, saturated fat, smoking, walnuts, wine

Recent studies have shown that higher Mediterranean diet adherence scores are associated with a significant reduction of the risk of death, heart disease, cancer, and brain disease. The problem with population studies like these is that people who eat...

Dr. Greger's New DVD Now Streaming

Michael Greger MD | December 29, 16 at 11:30 AM | Health

Read More: DVD, NutritionFacts.org, updates

Thank you for your incredible support! We blew the top off of our donation drive carrot in less than a week! Thank you for your flood of encouragement. It's such an honor to be able to dedicate my life...

What's the Mediterranean Diet's Secret?

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

Read More: Ancel Keys, animal fat, animal products, beans, brain health, cancer, cardiovascular disease, chronic diseases, cognition, cruciferous vegetables, dairy, depression, diabetes, fruit, grains, Greece, greens, heart disease, inflammation, iron, meat, Mediterranean diet, mental health, mortality, nuts, phytonutrients, plant-based diets, soy, standard American diet, stroke, vegans, vegetables, vegetarians

The Mediterranean Diet is an "in" topic nowadays in both the medical literature and the lay media. As one researcher put it, "Uncritical laudatory coverage is common, but specifics are hard to come by: What is it? Where did...

Striving for Alkaline Pee and Acidic Poo

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

Read More: acid/base balance, Africa, African Americans, animal protein, beans, bowel movements, cabbage, colon cancer, colon health, fecal bacteria, fiber, fruit, grains, gut flora, pH, plant-based diets, sauerkraut, standard American diet, vegans, vegetables, vegetarians, vinegar

More than 30 years ago, an idea was put forward that high colonic pH promoted colorectal cancer. A high colonic pH may promote the creation of carcinogens from bile acids, a process that is inhibited once you get below...