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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

Reducing Glycotoxin Intake to Help Reduce Brain Loss

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

Read More: Advanced Glycation End-products, aging, Alzheimer's disease, Australia, beef, brain disease, brain health, chicken, cognition, dementia, fish, glycotoxins, histones, lifespan, longevity, mental health, nerve health, pork, sirtuins, vegans, vegetarians

Each of us has about six billion miles of DNA. How does our body keep it from getting all tangled up? There are special proteins called histones, which act like spools with DNA as the thread. Enzymes called sirtuins...

Why Some Like Cilantro and Others Hate It

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

Read More: alternative medicine, animal studies, antioxidants, anxiety, arthritis, cilantro, coriander, gout, herbal remedies, inflammation, joint health, mental health, osteoarthritis, salsa, spices, steroids, sunburn, taste buds, uric acid

One sign of changing U.S. demographics is that salsa has replaced ketchup as America's #1 table condiment. One of the popular salsa ingredients is cilantro, described as one of the "most polarizing and divisive food ingredients known." Some people...

Improving Employee Diets Could Save Companies Millions

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

Read More: alcohol, animal products, animal protein, beans, blood sugar, body fat, broccoli, calories, cholesterol, chronic diseases, dairy, diabetes, eggs, exercise, fat, fiber, fruit, grains, industry influence, insulin, Lifestyle medicine, meat, metabolism, obesity, plant-based diets, prediabetes, saturated fat, tobacco, vegans, vegetables, vegetarians, weight loss, Workplace intervention

The food, alcohol, and tobacco industries have been blamed for "manufacturing epidemics" of chronic disease, but they're just trying to sell more product like everyone else. And so if that means distorting science, creating front groups, compromising scientists, blocking...

Get a 2017 Daily Dozen Recipe Calendar

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

Read More: updates

Today is #GivingTuesday, kicking off the charitable season with a celebration of giving and philanthropy. To commemorate it this year, we've created a 2017 Daily Dozen Recipe Calendar, with each month featuring a Green-Light recipe submitted by one of...

Lipotoxicity: How Saturated Fat Raises Blood Sugar

Michael Greger MD | November 24, 16 at 05:00 AM | Health

Read More: animal fat, autoimmune diseases, avocados, blood sugar, cancer, cardiovascular disease, carnitine palmitoyl transferase, ceramide, chronic diseases, dairy, diabetes, diacylglycerol, eggs, fat, fruit, heart disease, hydrogenated fats, inflammation, insulin, lipotoxicity, meat, milk, monounsaturated fats, mortality, muscle health, nuts, olives, omnivores, oxidative stress, pancreas health, plant-based diets, prediabetes, saturated fat, trans fats, vegans, vegetable oil, vegetarians, weight loss

The reason those eating plant-based diets have less fat buildup in their muscle cells and less insulin resistance may be because saturated fats appear to impair blood sugar control the most. The association between fat and insulin resistance is...

How a Low-Carb Diet is Metabolically Like Being Obese

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

Read More: bacon, blood sugar, butter, calories, diabetes, fat, insulin, low-carb diets, obesity, oxidative stress, prediabetes, spillover effect, sugar, trigylcerides, weight loss

Free fatty acids (meaning fat circulating in the bloodstream not packaged into triglycerides) result in inflammation, toxic fat breakdown products, and oxidative stress, which can gum up the insulin receptor pathway and lead to insulin resistance in our muscles....

Fat is the Cause of Type 2 Diabetes

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

Read More: athletes, blood sugar, diabetes, fat, insulin, lipotoxicity, low-carb diets, muscle health, pancreas health, prediabetes, saturated fat, sports medicine, suga

Studies dating back nearly a century noted a striking finding: If you take young, healthy people and split them up into two groups--half on a fat-rich diet and half on a carbohydrate-rich diet--we find that within just two days,...

The Natural Human Diet

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

Read More: Africa, bacon, blood pressure, brains, butter, cancer, cardiovascular disease, cheese, chicken, China, cholesterol, chronic diseases, diabetes, Dr. Caldwell Esselstyn, Dr. Dean Ornish, eggs, evolution, fiber, fruit, greens, heart disease, high blood pressure, hypertension, low-carb diets, meat, Mioscene, nutrition myths, nuts, paleolithic diets, plant-based diets, pork, prehistoric diets, Pritikin, seeds, stroke, trans fats, Twinkies, vegetables

Our epidemics of dietary disease have prompted a great deal of research into what humans are meant to eat for optimal health. In 1985, an influential article highlighted in my video The Problem With the Paleo Diet Argument was...

Medical Care: The Third Leading Cause of Death

Michael Greger MD | November 10, 16 at 05:00 AM | Health

Read More: cancer, cardiovascular disease, cholesterol, chronic diseases, hand washing, heart disease, iatrogenic, lifespan, Lifestyle medicine, medical education, medical profession, medications, mortality, penis health, side effects, statins, surgery

An ounce of prevention is worth a pound of cure, but a pound isn't that heavy. Why change our diet and lifestyle when we can just wait and let modern medicine fix us up? In my video The Actual...

How Well Do Cholesterol-Lowering Drugs Actually Work?

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

Read More: bone fractures, breast cancer, cancer, cardiovascular disease, cardiovascular health, cholesterol, colon cancer, Dr. Dean Ornish, exercise, Fosamax, heart disease, heart health, Lifestyle medicine, Lipitor, medical education, medications, meditation, plant-based diets, side effects, statins, stress

One of the reasons people may undervalue diet and lifestyle changes is an overconfidence in the ability of pills and procedures to prevent disease. For example, people tend to wildly overestimate the power of things like mammograms and colonoscopies...

Flax Seeds Can Have Profound Effect on Hypertension

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

Read More: aging, animal fat, antioxidants, blood pressure, burgers, cancer, cardiovascular disease, cardiovascular health, cholesterol, fat, flax seeds, hamburgers, heart disease, heart health, hypertension, lard, meat, medications, molasses, mortality, phytonutrients, plant-based diets, salt, saturated fat, side effects, statins, stroke, sugar, tomatoes

A recent article in the journal, Meat Science, acknowledged that a sector of the population perceives meat as a food that is detrimental to their health because of studies associating meat consumption with heart disease and cancer. So, the...

How May Eating Plants Help Prevent Alzheimer's Disease?

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

Read More: aging, Alzheimer's disease, antioxidants, berries, blueberries, brain disease, brain health, cognition, dairy, dementia, Evidence-based medicine, exercise, fat, FDA, fiber, fruit, greens, lifespan, meat, medications, mortality, oxidative stress, phytonutrients, plant-based diets, saffron, saturated fat, side effects, smoking, spices, standard American diet, strawberries, sugar, turmeric, vegetables

Intake of saturated fats and added sugars, two of the primary components of a modern Western diet, is linked with the development of Alzheimer's disease. There has been a global shift in dietary composition, from traditional diets high in...

How Turmeric Can Help Combat the Effects of Sitting

Michael Greger MD | October 25, 16 at 05:00 AM | Health

Read More: cardiovascular disease, cardiovascular health, Curcumin, diabetes, endothelial, exercise, fat, green tea, heart disease, heart health, Lifestyle medicine, mortality, nuts, spices, treadmill, turmeric

The average American spends most of their waking life sitting down, which is associated with an increased risk of death even among people who go to the gym after work and exercise regularly. Doing lots of sitting may double...

Can Peppermint Improve Athletic Performance?

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

Read More: aromatherapy, athletes, body odor, Europe, exercise, fatigue, herbal remedies, lung health, mint, mood, PCOS, peppermint, peppermint oil, sexual health, smoking, spearmint, suicide, tea, testosterone, women's health

Ever since smoking was prohibited in night clubs, customers have increasingly noticed other unpleasant smells present in the club--like body odors. So, researchers in Europe thought they'd try to cover them up. The researchers measured the effects of peppermint,...

Reversal of Chronic Disease Risk Even Late in Life

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

Read More: animal fat, animal products, Asia, beans, breast cancer, cancer, cardiovascular disease, chronic diseases, colon cancer, diabetes, fruit, grains, heart disease, Japan, junk food, legumes, meat, mortality, nuts, plant-based diets, prostate cancer, smoking, standard American diet, vegans, vegetables, vegetarians

A hundred years ago, the New York Times reported on a rather sophisticated study for the time: 4,600 cases of cancer appearing over a seven year period, suggesting that the increased consumption of animal foods was to blame. A...

Are Raisins a Good Snack Choice?

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

Read More: blood sugar, California Raison Marketing Board, calories, candy, Coca-Cola, cookies, dried fruit, fruit, grapes, industry influence, junk food, obesity, pizza, potato chips, raisins, soda

Raisins, like all fruits, have a variety of health benefits, but dried fruit is higher in calories per serving than fresh, so might they contribute to weight gain? A study done by the University of Connecticut helped set people's...

What About Eating Just a Little Meat?

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

Read More: Adventist Health Studies, animal fat, animal products, animal protein, Asia, blood pressure, cardiovascular health, chronic diseases, dairy, diabetes, eggs, fish, flexitarians, heart health, hypertension, junk food, meat, plant-based diets, prediabetes, soda, Taiwan, vegans, vegetarians

As you can see in my video, Plant-Based Diets and Diabetes, we've known for decades that a plant-based diet may be protective against diabetes. Studies going back half a century found that those eating meat one or more days...

Do You Meet the Simple Seven?

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

Read More: American Heart Association, beans, beverages, blood pressure, blood sugar, cardiovascular disease, cardiovascular health, cholesterol, exercise, fruit, grains, heart disease, heart health, Lifestyle medicine, medical education, medical profession, mortality, smoking, soda, vegetables, World Health Organization

In public health school, you learn there are three levels of preventive medicine. Primary prevention would be like trying to prevent someone at risk for heart disease from getting his or her first heart attack. Secondary prevention is when...

How to Design Saturated Fat Studies to Hide the Truth

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

Read More: animal fat, Atkins diet, butter, calories, cardiovascular disease, cardiovascular health, cheese, chicken, cholesterol, dairy, dietary guidelines, fat, Harvard, HDL cholesterol, heart disease, heart health, Hegsted Equation, industry influence, LDL cholesterol, meat, milk, National Beef Cattleman's Association, National Dairy Board, saturated fat, tobacco, vegans, vegetarians

Where do the international consensus guidelines to dramatically lower saturated fat consumption come from? (I show the list in my video, The Saturated Fat Studies: Buttering Up the Public). They came from literally hundreds of metabolic ward experiments, which...

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...