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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

Are the Benefits of Organic Food Underrated or Overrated?

Michael Greger MD | April 27, 17 at 05:00 AM | Health

Read More: cadmium, cancer, carcinogens, carrots, cookies, dioxin, DNA damage, exercise, fruit, heavy metals, industrial pollutants, jelly beans, junk food, organic foods, pesticides, potato chips, smoking, tobacco, vegetables

Pesticides have been classified as probable carcinogens for 25 years. Different pesticides have been associated with different cancers through a variety of mechanisms, including genetic damage--direct hits to our DNA or chromosomes--and epigenetic modification, changes in the way our...

What Are the Benefits of Organic?

Michael Greger MD | April 25, 17 at 05:00 AM | Health

Read More: ADHD, alcohol, animal fat, antioxidants, beverages, birth defects, cancer, children, dairy, fat, fish, hypospadias, industrial pollutants, insecticides, insects, lymphoma, meat, men's health, milk, non-Hodgkin lymphoma, organic foods, organochlorines, penis health, pesticides, soda, testicular cancer, United Kingdom, women's health

The medical literature has been historically hostile to organic foods, blaming in part erroneous information supplied by the health food movement for our ignorance of nutrition. But until just a few generations ago, all food was organic. It's kind...

The Best Way to Wash Fruit and Vegetables

Michael Greger MD | April 20, 17 at 05:00 AM | Health

Read More: animal products, bacon, cheese, chicken, cooking methods, dairy, DDT, dishwashing detergent, eggs, fat, fish, fruit, fruit and vegetable wash, industrial pollutants, lettuce, meat, organic foods, pesticides, potatoes, poultry, salt, strawberries, TGI Friday's, tomatoes, vegetables, vinegar, water

How might we reduce our exposure to pesticide residues on fruits and vegetables? What about staying away from imported produce? Well, it turns out domestic produce may be even worse, dispelling the notion that imported fruits and vegetables pose...

The Food Safety Risk of Organic versus Conventional

Michael Greger MD | April 18, 17 at 05:00 AM | Health

Read More: ADHD, ALS, Alzheimer's disease, antibiotics, birth defects, brain disease, brain health, brain tumors, Camplyobacter, cancer, chicken, children, dementia, food poisoning, foodborne illness, leukemia, meat, memory, organic foods, Parkinson's disease, pesticides, pregnancy, reproductive health, Salmonella, superbugs, women's health

The stated principles of organic agriculture are "health, ecology, fairness, and care," but if you ask people why they buy organic, the strongest predictor is concern for their own health. People appear to spend more for organic foods for...

Organic versus Conventional: Which has More Nutrients?

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

Read More: antioxidants, barbecuing, breast cancer, broccoli, cancer, colon cancer, cost savings, DNA damage, esophageal cancer, fruit, frying, heterocyclic amines, meat, organic foods, pesticides, phenolics, phytonutrients, polycyclic hydrocarbons, smoked foods, strawberries, sulforaphane, vegetables

Are organic foods safer and healthier than conventional alternatives? Those are two separate questions. Some consumers are interested in getting more nutrients; others are more concerned about getting fewer pesticides. Let's do nutrition first. As seen in my video,...

What Animal Protein Does in Your Colon

Michael Greger MD | April 11, 17 at 05:00 AM | Health

Read More: alcohol, ammonia, animal protein, beans, beef, beverages, butyrate, cabbage, cancer, colon cancer, colon disease, colon health, cruciferous vegetables, dried fruit, fiber, food additives, fruit, hydrogen sulfide, inflammatory bowel disease, lentils, meat, oatmeal, organic, pasta, peas, plant protein, plant-based diets, preservatives, processed foods, protein, rectal cancer, standard American diet, sulfites, sulfur, sulfur dioxide, ulcerative colitis, vegans, vegetables, vegetarians, wine, women's health

There's a take-off of the industry slogan, "Beef: It's What's For Dinner" - "Beef: It's What's Rotting in Your Colon." I saw this on a shirt once with some friends and I was such the party pooper--no pun intended--explaining...

High Blood Pressure: Normal but Not Natural

Michael Greger MD | April 6, 17 at 05:00 AM | Health

Read More: Africa, aging, bacon, beans, beverages, blood pressure, bologna, cardiovascular disease, cardiovascular health, cholesterol, cola, cruciferous vegetables, Europe, fruit, grains, greens, ham, heart disease, heart health, hot dogs, hypertension, lifespan, longevity, meat, medications, mortality, nuts, plant-based diets, processed meat, seeds, soda, standard American diet, vegetables

The most comprehensive and systematic analysis of causes of death ever undertaken allows us to answer questions like, how many lives could we save if people cut back on soda? The answer is 299,521. Soft drinks aren't just bad...

NutritionFacts.org Gets a Makeover

Michael Greger MD | April 4, 17 at 05:00 AM | Health

Read More: Updates

New Features With More on the Way Notice anything different? NutritionFacts.org just got a major redesign! The site was looking SO 2014, but the main reason we wanted to shake things up is to make the homepage more newbie-friendly....

Antioxidant- and Folate-Rich Foods for Depression

Michael Greger MD | April 1, 17 at 05:00 AM | Health

Read More: antioxidants, anxiety, ascorbic acid, beans, Canada, CDC, depression, folate, folic acid, fruit, grapefruit, greens, guava, junk food, lycopene, men's health, mental health, mood, mortality, oxidative stress, papaya, phytonutrients, processed foods, sexual health, spinach, suicide, supplements, tomatoes, vegetables, Vitamin C, vitamin E, women's health

According to the Centers for Disease Control and Prevention, the rates of all of our top 10 killers have fallen or stabilized except for one, suicide. As shown in my video, Antioxidants & Depression, accumulating evidence indicates that free...

How to Prevent a Heart Attack

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

Read More: cardiovascular disease, cardiovascular health, cholesterol, heart diseases, heart health, inflammation, lifespan, mortality, saturated fat, standard American diet, trans fat

In my video Arterial Acne, I described atherosclerotic plaques as inflamed pockets of pus. Our coronary arteries start out healthy, but then the saturated fat, trans fat, and cholesterol in the standard American diet increases the cholesterol in our...

The Five Most Important Dietary Tweaks

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

Read More: American Heart Association, bacon, beverages, cancer, cardiovascular disease, children, chronic diseases, cola, deli meats, diabetes, exercise, fruit, heart disease, hot dogs, lifespan, Lifestyle medicine, longevity, meat, mortality, nuts, plant-based diets, pork, processed meats, seeds, Slovenia, smoking, soda, standard American diet, stroke, tobacco, tofu, vegans, vegetables, vegetarians

Generally, adherence to healthy lifestyle patterns has decreased during the last 18 years. Obesity is up, exercise is down, and the number of people eating just five servings of fruits and veggies a day dropped like a rock. And...

Clostridium difficile in the Food Supply

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

Read More: antibiotics, C. diff, chicken, colon health, cooking temperature, factory farming practices, farm animals, fecal bacteria, fecal contamination, food poisoning, foodborne illness, MRSA, pork, poultry, safety limits, superbugs, surgery, viral infections, zoonotic disease

Clostridium difficile is one of our most urgent bacterial threats, sickening a quarter million Americans every year, and killing thousands at the cost of a billion dollars a year. And it's on the rise. As shown in C. difficile...

How Milk May Contribute to Childhood Obesity

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

Read More: adolescence, breastfeeding, calories, casein, children, dairy, hormones, infant formula, infants, milk, obesity, premature puberty, protein, puberty, skim milk, women's health

We've known that breastfed infants may be protected against obesity later in life for more than 30 years, but why? It may be the formula. Giving infants formula based on cow's milk presents an unusual situation. Cow's milk is...

How Much Fiber Should You Eat Every Day?

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

Read More: adolescence, apple, beans, berries, blood sugar, broccoli, calories, cardiovascular disease, cardiovascular health, children, cholesterol, diabetes, Dr. Denis Burkitt, Dr. John Harvey Kellogg, fat, fiber, Froot Loops, grains, heart disease, heart health, meat, nuts, oats, obesity, pasta, stroke, vegetables

High dietary fiber intake may help prevent strokes. The belief that dietary fiber intake is protectively associated with certain diseases was postulated 40 years ago and then enormously fueled and kept alive by a great body of science since....

How Exactly Does Type 2 Diabetes Develop?

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

Read More: American Diabetes Association, animal fat, blood sugar, breast cancer, breast health, calories, cancer, diabetes, fat, fatty liver disease, insulin, liver health, obesity, pancreas health, prediabetes, VLDL, women's health

Insulin resistance is the cause of both prediabetes and type 2 diabetes. OkK, so what is the cause of insulin resistance? Insulin resistance is now accepted to be closely associated with the accumulation of fat within our muscle cells....

Deep Breathing Exercise for Nausea

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

Read More: alcohol, alternative medicine, aromatherapy, caesarean section, chemotherapy, complementary medicine, ginger, mint, nausea, peppermint, spearmint, suppositories, surgery, vomiting, water

One of the most common fears patients express when facing surgery is postoperative nausea, which can range from minor queasiness to protracted periods of vomiting. Feeling sick to one's stomach and throwing up after surgery is a common problem,...

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...