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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

Ginger Root for Migraines

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

Read More: alternative medicine, complementary medicine, dizziness, ginger, headaches, heartburn, herbal remedies, industry influence, medications, migraine headaches, pain, side effects, spices, stomach health, water

Many successful herbal treatments start like this: Some doctor learns that some plant has been used in some ancient medical tradition, like ginger for headaches. Well, the physician has patients with headaches and so tries advising one with migraines...

Sushi Worm Parasite

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

Read More: brain disease, brain health, eye health, fish, food poisoning, food-borne illness, mortality, oral health, pain, paralysis, parasites, plant-based diets, raw food, seafood, sushi, worms

There was a report recently of a woman in San Francisco suffering from gnathostomiasis. I had learned about the disease while I was in medical school, but never actually saw a case. Evidently, it's now on the rise. Clinically,...

Plant versus Animal Iron

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

Read More: African Americans, anemia, animal products, beans, beef, cancer, cardiovascular disease, cardiovascular health, chicken, chickpeas, cholesterol, cruciferous vegetables, diabetes, dried fruit, farm animals, fiber, grains, greens, heart disease, heart health, heme iron, iron, legumes, lentils, lung cancer, magnesium, meat, metabolic syndrome, Mexican Americans, mortality, nuts, plant-based diets, pork, rye, seeds, split peas, vitamin A, vitamin C, vitamin E

It is commonly thought that those who eat plant-based diets may be more prone to iron deficiency, but it turns out that they're no more likely to suffer from iron deficiency anemia than anybody else. This may be because...

Should Cancer Patients Avoid Raw Fruits and Vegetables?

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

Read More: American Cancer Society, animal products, antibiotics, antioxidants, bone marrow health, Campylobacter, cancer, CDC, chemotherapy, cooking methods, dairy, E. coli, eggs, Evidence-based medicine, FDA, food poisoning, food-borne illness, fruit, immune function, leukemia, lymphoma, meat, medical education, medical profession, mortality, neutropenic diet, raw food, salads, Salmonella, side effects, sprouts, vegetables

Back in the 1960s, a patient isolator unit was developed for cancer patients undergoing chemotherapy. Because our immune system cells were often caught in the friendly fire, up to 50% of cancer patients died of infections before they could...

How Much Nutrition Education Do Doctors Get?

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

Read More: alternative medicine, animal products, cancer, cardiovascular disease, cardiovascular health, cholesterol, chronic diseases, diabetes, heart disease, heart health, lifestyle medicine, medical education, medical ethics, medical profession, medications, plant-based diets, reversing chronic disease, stroke, surgery

In the United States, most deaths are preventable and related to nutrition. Given that the number-one cause of death and the number-one cause of disability in this country is diet, surely nutrition is the number-one subject taught in medical...

Using a Smell Test to Diagnose Alzheimer's Disease

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

Read More: Alzheimer's disease, brain disease, brain health, cognition, dementia, elderly, lavender, peanut butter, sense of smell

Alzheimer's disease (AD) pathology appears to start in the part of the brain that handles smell before subsequently spreading to additional brain regions and then, ultimately, taking over much of the rest of the brain. This led some to...

Follow-up Researcher Training, Upcoming CME, and The Big Fat Truth

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

Read More: updates

Reaching More People Than Ever Before A long time dream of mine is finally coming true! NutritionFacts.org will be partnering with the American College of Lifestyle Medicine to offer online courses for Continuing Medical Education credits. To maintain an...

Can Oatmeal Reverse Heart Disease?

Michael Greger MD | May 30, 17 at 05:00 AM | Health

Read More: Africa, antioxidants, bacon, beans, cancer, cardiovascular disease, cardiovascular health, cholesterol, chronic diseases, constipation, corn, diabetes, Dr. Hugh Trowell, eggs, fiber, grains, greens, heart disease, heart health, meat, medications, millet, mortality, oatmeal, obesity, plant-based diets, standard American diet, statins, stroke, sweet potatoes, vegans, vegetables, vegetarians, women's health

Fiber continues to be singled out as a nutrient of public health concern. We're getting only about half the minimum recommended intake on average. There is a fiber gap in America. Less than 3 percent meet the recommended minimum....

Best Foods for Acid Reflux

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

Read More: alcohol, animal fat, animal products, animal protein, antioxidants, apples, Asia, Barrett's esophagus, beans, berries, beverages, bone fractures, breast cancer, cancer, cholecystokinin, citrus, cruciferous vegetables, eggs, esophageal cancer, esophagus, esophagus health, fat, fiber, food poisoning, food-borne illness, fruit, GERD, heartburn, McDonald's, meat, medications, melanoma, men's health, mortality, nuts, obesity, plant protein, pneumonia, poultry, prostate cancer, reflux, smoking, stomach, supplements, tobacco, vegans, vegetables, vegetarians, vitamin C, vitamin E, women's health

Gastroesophageal reflux disease (GERD) is one of the most common disorders of the digestive tract. The two most typical symptoms are heartburn and regurgitation of stomach contents into the back of the throat, but GERD is not just burning...

What Happened to the Rice Diet?

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

Read More: alternative medicine, blindness, blood pressure, cancer, cardiovascular disease, cardiovascular health, chronic diseases, diabetes, Dr. Walter Kempner, fat, fruit, heart disease, heart health, hypertension, industry influence, kidney disease, kidney failure, Lifestyle medicine, medications, mortality, plant-based diets, protein, reversing chronic disease, rice, sodium, statins, stroke

During his career at Duke, Dr. Walter Kempner treated more than 18,000 patients with his rice diet. The diet was originally designed as a treatment for kidney failure and out-of-control high blood pressure at a time when these diagnoses...

Foods that Affect Testosterone Levels

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

Read More: bone health, children, dairy, depression, endocrine-disruptors, erectile dysfunction, fish, hormones, impotence, industrial pollutants, industrial toxins, meat, memory, men's health, mental health, obesity, PCBs, penis health, penis size, persistent organic pollutants, pregnancy, puberty, reproductive health, sexual dysfunction, sexual health, sperm counts, testosterone, women's health

A number of studies suggest that exposure to industrial pollutants may affect sexual function, for example, loss of libido, sexual dysfunction, and impotence. This may be due to effects on testosterone levels. In a study of men who ate...

Best Food for MGUS to Prevent Multiple Myeloma

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

Read More: African-American, aspartame, beef, beverages, cancer, chicken, curcumin, farm animals, french fries, garlic, green tea, leukemia, lymphoma, meat, MGUS, multiple myeloma, pickled vegetables, potato chips, soda, soy, spices, tea, turmeric, vegetables, vegetarians, viral infections, zoonotic disease

Multiple myeloma is one of our most dreaded cancers. It's a cancer of our antibody-producing plasma cells, and is considered one of our most intractable blood diseases. The precursor disease is called monoclonal gammopathy of undetermined significance (MGUS). When...

The Best Diet for Rheumatoid Arthritis

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

Read More: arthritis, autoimmune diseases, C-reactive protein, cancer, cardiovascular health, gut flora, heart health, immune function, joint disease, joint health, lignans, pain, plant-based diet, Proteus mirabilis, rheumatoid arthritis, urinary tract infections, vegans, vegetarians, women's health

Rheumatoid arthritis is a chronic systemic autoimmune disease affecting millions. It is characterized by persistent pain, stiffness, and progressive joint destruction leading to crippling deformities, particularly in the hands and feet. What can we do to prevent and treat...

NutritionFacts.org Is Proud to Help Launch a New Organization: Balanced

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

Read More: updates

New DVD, New Organization & Last Chance to Register for Research Training All the evidence in the world is worthless, unless it can be translated into action. I can research until I'm blue in the face (like the time...

The Best Diet to Prevent Kidney Stones

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

Read More: animal products, animal protein, burgers, calcium, chicken, cod, fiber, fish, fruit, hamburgers, kidney disease, kidney health, kidney stones, magnesium, meat, oxalate, plant-based diets, red meat, salmon, steak, tuna, United Kingdom, uric acid, vegans, vegetarians

In my video How to Prevent Kidney Stones With Diet you can see what the jagged surface of a kidney stone looks like under a microscope. Imagine one of those scraping down your urinary canal! Kidney stones affect approximately...

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...