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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

Brown Fat: Losing Weight Through Thermogenesis

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

Read More: blindness, body fat, brown fat, calories, children, CT scan, DNP, exercise, eye disease, eye health, fever, industrial pollutants, industrial toxins, medications, metabolism, obesity, safety limits, side effects, vision, weight loss

During World War I, it was discovered that many of the chemicals for new explosives had toxic or even lethal effects on the workers in the munitions factories. Chemicals such as di-nitro-phenol (DNP) can boost metabolism so much that...

How Doctors Responded to Being Named a Leading Killer

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

Read More: alcohol, aspirin, cardiovascular disease, cardiovascular health, Dr. Barbara Starfield, heart disease, heart health, iatrogenic, Institute of Medicine, Lifestyle medicine, medical education, medical ethics, medical profession, medications, mortality, side effects, surgery, Twinkies, women's health

In my video Why Prevention Is Worth a Ton of Cure, I profiled a paper that added up all the deaths caused by medical care in this country, including the hundred thousand deaths from medication side effects, all the...

Does Rye Bread Protect Against Cancer?

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

Read More: adolescence, alcohol, berries, bread, breast cancer, breast health, cancer, cancer survival, children, cruciferous vegetables, dairy, fiber, flax seeds, grains, greens, lignans, men's health, milk, prostate cancer, puberty, red wine, rye, sesame seeds, Sweden, tea, vegetables, vegetarians, women's health

Previously, I've explored the beneficial effects of flaxseeds on prostate cancer (Flaxseeds vs. Prostate Cancer), as well as breast cancer prevention and survival (Flaxseeds & Breast Cancer Prevention and Breast Cancer Survival & Lignan Intake). The cancer-fighting effect of...

Fish Consumption and Suicide

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

Read More: alcohol, Alzheimer's disease, animal fat, animal products, antioxidants, autism, beans, brain disease, brain health, dementia, depression, DHA, EPA, Europe, fat, fish, fruit, Greece, Harvard, industrial toxins, Japan, meat, Mediterranean diet, memory, mental health, mercury, mushrooms, nuts, omega-3 fatty acids, persistent organic pollutants, phytonutrients, red wine, seafood, soy, suicide, vegetables, wine

Depression is a serious and common mental disorder responsible for the majority of suicides. As I've covered in Antioxidants & Depression, intake of fruits, vegetables, and naturally occurring antioxidants have been found to be protectively associated with depression. Therefore,...

Can Dehydration Affect Our Mood?

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

Read More: brain disease, brain health, cancer, cardiovascular disease, cognition, dehydration, energy, exercise, fatigue, happiness, heart disease, mental health, mood, water

Water is by far the number-one nutrient in our diet. Studies have suggested that proper hydration may lower our risk of heart disease and cancer, and may even make us better kissers. Brushing artificial skin against the lips of...

Heart of Gold: Turmeric vs. Exercise

Michael Greger MD | September 5, 17 at 05:00 AM | Health

Read More: antioxidants, cardiovascular disease, cardiovascular health, curcumin, curry powder, exercise, fruit, heart disease, heart health, Japan, oxidative stress, stroke, supplements, turmeric, vegan, vegetables, vitamin C

The endothelium is the inner lining of our blood vessels. Laid end-to-end, endothelial cells from a single human would wrap more than four times around the world. And it's not just an inert layer; it's highly metabolically active. I've...

How to Design a Misleading Study to Show Diet Doesn't Work

Michael Greger MD | August 29, 17 at 05:00 AM | Health

Read More: Africa, citrus, diverticulitis, Dr. James Linde, fiber, fish, fruit, greens, lemons, meat, mortality, paleolithic diets, plant-based diets, scurvy, vegans, vegetables, vegetarians, vitamin C

A study out of the University of North Carolina found no association between dietary fiber intake and diverticulosis. They compared those who ate the highest amount of fiber, 25 grams, to those who ate the smallest amount, which was...

9 out of 10 That Die From it Never Knew They Even Had This Preventable Disease

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

Read More: African Americans, aging, bladder health, colon disease, colon health, diverticulitis, diverticulosis, Dr. Denis Burkitt, Dr. Neil Painter, fiber, grains, intestinal health, meat, mortality, pain, plant-based diets, stool size, sugar, Uganda

Diverticula are out-pouchings of our intestine. Doctors like using a tire analogy: high pressures within the gut can force the intestines to balloon out through weak spots in the intestinal wall like an inner tube poking out through a...

The 3 Vitamins that Prevent Brain Loss

Michael Greger MD | August 22, 17 at 05:00 AM | Health

Read More: aging, Alzheimer's disease, animal protein, b12, bacon, beans, brain disease, brain health, breakfast, cognition, colon health, dementia, eggs, fiber, folate, Framingham Heart Study, greens, gut flora, Harvard, homocysteine, legumes, meat, memory, methionine, mortality, plant-based diets, steak, supplements, vegans, vegetables, vegetarians, vitamin B12, vitamin B6

By our seventies, one in five of us will suffer from cognitive impairment. Within five years, half of those cognitively impaired will progress to dementia and death. The earlier we can slow or stop this process, the better. Although...

Comparing Pollutant Levels Between Different Diets

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

Read More: animal fat, animal products, beef, Boston, breast milk, breastfeeding, California, CHAMACOS study, chicken, children, cognition, dioxins, endocrine disruptors, Europe, fat, feed additives, fish, flame-retardant chemicals, industrial pollutants, industrial toxins, infants, meat, neurotoxins, PBDEs, persistent organic pollutants, plant-based diets, pork, poultry, pregnancy, puberty, safety limits, seafood, thyroid health, turkey, USDA, vegans, vegetarians, women's health

The results of the CHAMACOS (Center for the Health Assessment of Mothers and Children of Salinas) study were published recently. This study of a California birth cohort investigated the relationship between exposure to flame retardant chemical pollutants in pregnancy...

A Dietary Treatment for Irritable Bowel Syndrome

Michael Greger MD | August 15, 17 at 05:00 AM | Health

Read More: alternative medicine, antidepressants, berries, colon disease, colon health, complementary medicine, diabetes, dizziness, gut flora, herbal tea, herbs, irritable bowel syndrome, kidney failure, medications, mint, pain, peppermint, peppermint oil, placebo, placebo effect, Prozac, sexual health, side effects, smoothies, tea

Irritable bowel syndrome (IBS) is a chronic, episodic intestinal disorder characterized by abdominal pain and altered bowel habits. It affects 1 in 7 Americans, although most go undiagnosed. IBS can have a substantial impact on well-being and health, but...

Reversing Diabetic Blindness with Diet

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

Read More: animal fat, animal protein, blindness, blood pressure, cardiovascular disease, cardiovascular health, cholesterol, diabetes, Dr. Walter Kempner, eye disease, eye health, fat, fruit, heart disease, heart failure, heart health, hypertension, insulin, kidney disease, kidney failure, lasers, medication, protein, reversing chronic diseases, rice, sodium, steroids, surgery, vision, weight loss

Though many reported feeling better on Dr. Walter Kempner's rice and fruit diet, he refused to accept such anecdotal evidence as proof of success. He wanted objective measurements. The most famous were his "eyegrounds photographs," taken with a special...

Optimal Bowel Movement Position

Michael Greger MD | August 8, 17 at 05:00 AM | Health

Read More: Africa, African Americans, anorectal angle, appendicitis, bowel movements, colon disease, colon health, constipation, diverticulitis, Dr. Denis Burkitt, Dr. Joel Kahn, fiber, gallstones, hemorrhoids, hiatal hernia, mortality, plant-based diets, squatty potty, standard American diet, stool size, varicose veins, vegans, vegetarians

Compared to rural African populations eating traditional plant-based diets, white South Africans and black and white Americans have more than 50 times more heart disease, 10 times more colon cancer, more than 50 times more gallstones and appendicitis, and...

Optimal Bowel Movement Frequency

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

Read More: Africa, blood pressure, bowel movements, cardiovascular disease, cardiovascular health, colon disease constipation, colon health, diarrhea, evolution, fiber, gastrocolic reflex, heart disease, heart health, plant-based diets, salt, standard American diet, stool size, stroke, United Kingdom, vegans, vegetarians

Lasting for 3,000 years, ancient Egypt was one of the greatest ancient civilizations--with a vastly underestimated knowledge of medicine. They even had medical subspecialties. The pharaohs, for example, had access to dedicated physicians to be "guardian[s] of the royal...

Plant-Based Diets as the Nutritional Equivalent of Quitting Smoking

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

Read More: cancer, cardiovascular disease, chronic diseases, dairy, diabetes, Dr. Neal Barnard, exercise, fat, frying, heart disease, hypertension, lifestyle medicine, meat, medical education, mortality, plant-based diets, smoking, stroke, tobacco

Despite the most widely accepted and well-established chronic disease practice guidelines uniformly calling for lifestyle change as the first line of therapy, doctors often don't follow these recommendations. As seen in my video, The Best Kept Secret in Medicine,...

Big Sugar Takes on the World Health Organization

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

Read More: alcohol, animal fat, beans, chronic diseases, dietary guidelines, fat, fruit, grains, industry influence, junk food, lentils, medications, Michelle Obama, peas, processed foods, salt, saturated fat, subsidies, sugar, Sugar Association, tobacco, trans fats, vegetables, World Health Organization

The World Health Organization (WHO) recommends we reduce our consumption of salt, trans fats, saturated fats, and added sugars. Why? Because consumption of such foods is the cause of at least 14 million deaths every year from chronic diseases....

What Causes Diabetes?

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

Read More: alcohol, animal fat, animal products, avocados, cancer, cheese, chicken, cholesterol, dairy, diabetes, exercise, fat, fatty liver disease, insulin, LDL cholesterol, lipotoxicity, lung cancer, meat, monounsaturated fats, nuts, olives, pancreas health, prediabetes, saturated fat, smoking, tobacco

After about age 20, we may have all the insulin-producing beta cells we're ever going to get. So if we lose them, we may lose them for good. Autopsy studies show that by the time type 2 diabetes is...

Stomach Stapling Kids

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

Read More: anxiety, children, gastric bypass, mortality, nausea, obesity, pulmonary embolism, shock, side effects, surgery, weight loss

Weight loss surgery for children and adolescents is becoming widespread and is being performed in children as young as five years old. Roux-en-Y gastric bypass is the most common type of procedure, in which surgeons cut out nearly the...

Diet and Hiatal Hernia

Michael Greger MD | July 13, 17 at 05:00 AM | Health

Read More: Africa, Barrett's esophagus, bowel movements, cancer, carcinogens, colon disease, colon health, diverticulitis, diverticulosis, esophageal cancer, fat, fiber, GERD, heartburn, hemorrhoids, hernia, hiatal hernia, phytates, plant-based diets, standard American diet, stool size, varicose veins, vegans, vegetarians

In terms of preventing acid reflux heartburn, high-fat meals cause dramatically more acid exposure in the esophagus in the hours after a meal. I talked about this in Diet and GERD Acid Reflux Heartburn. High fiber intake decreases the...

Music as Medicine

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

Read More: allergies, anxiety, athletes, Bach, Beethoven, calories, children, exercise, jazz, medications, men's health, metabolism, Mozart, music, pain, side effects, surgery, testosterone, Valium, weight gain, weight loss, women's health

We've been playing music since the Paleolithic Era, 40,000 years ago. Music as therapy has been documented since at least biblical times. The first music therapy experiment was published in the Journal of the American Medical Association in 1914....