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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, with new videos and articles uploaded every day.

Blog Entries by Michael Greger MD

Using Diet to Treat Asthma and Eczema

Michael Greger MD | July 9, 15 at 05:00 AM | Health

Read More: asthma, blood pressure, caloric restriction, cancer, carcinogens, cholesterol, eczema, kidney disease, kidney function, kidney health, LDL cholesterol, lung disease, lung health, placebo effect, plant-based diets, side effects, smoking, steroids, Sweden, vegans, vegetarians, weight loss

I previously discussed the power of fruits and vegetables to help prevent and treat asthma and allergies. If adding a few more servings of fruits and vegetables may help asthma, what about a diet centered around plants? Twenty patients...

Treating Asthma With Plants vs. Pills

Michael Greger MD | July 7, 15 at 05:00 AM | Health

Read More: allergies, antioxidants, apples, asthma, beans, berries, broccoli, children, citrus, flax seeds, fruit, grapes, Harvard Nurses' Health Study, herbs, inflammation, Japan, lung disease, lung health, nuts, oxidative stress, phytonutrients, polyphenols, protein, respiratory infections, salads, soy, sugar, supplements, tea, tomatoes, vegetables, vitamin C, vitamin E

In my video Treating Asthma With Fruits and Vegetables, I highlighted a landmark study on manipulating antioxidant intake in asthma. The study found that just a few extra fruits and vegetables a day can powerfully reduce asthma exacerbation rates....

How Fruits and Vegetables Can Treat Asthma

Michael Greger MD | July 2, 15 at 05:00 AM | Health

Read More: allergies, alpha-carotene, animal products, antioxidants, asthma, beta carotene, chicken, cholesterol, cryptoxanthin, eczema, eggs, fruit, grains, lung disease, lung health, lutein, lycopene, oxidative stress, peas, phytonutrients, plant-based diets, standard American diet, vegans, vegetables, vegetarians

In my video Preventing Asthma With Fruits and Vegetables, I highlighted an international study of asthma and allergies involving more than a million kids. The study found a consistent inverse relationship between prevalence rates of asthma, allergies, and eczema...

How Fruits and Vegetables Can Prevent Asthma

Michael Greger MD | June 30, 15 at 05:00 AM | Health

Read More: air pollution, allergies, animal protein, antibiotics, antioxidants, asthma, biomagnification, breastfeeding, calories, children, chronic diseases, dairy, eczema, eggs, elderly, endocrine disruptors, fermented foods, fruit, immune function, India, industrial toxins, inflammation, lung disease, lung health, meat, organic foods, oxidative stress, persistent organic pollutants, plant protein, plant-based diets, probiotics, protein, respiratory infections, saturated fat, smoking, soda, soy, vegans, vegetables, vegetarians, vitamin C

Asthma is the most common chronic disease in children and the prevalence is increasing around the world. Despite this, most research dollars are spent on adult chronic disease. "One might ask," a group of researchers posited "whether this is...

Our Tax Dollars Subsidize Unhealthy Foods

Michael Greger MD | June 25, 15 at 05:00 AM | Health

Read More: American Egg Board, animal products, beans, chicken, Coca-Cola, corn, corn syrup, cost savings, dairy eggs, empty calories, factory farming practices, Farm Bill, farmers, feed additives, fish, fruit, grains, industry influence, marketing, meat, Medicare, milk, National Cattlemen's Beef Association, National Dairy Council, National Pork Producers Council, pork, poultry, seafood, soda, soy, standard American diet, subsidies, sugar, tobacco, turkey, vegetables

Why do food companies sell junk? Because unhealthy commodities are highly profitable. This is in part because of their "low production cost, long shelf-life, and high retail value," which create perverse incentives for industries to market and sell more...

Reducing Arsenic in Chicken and Rice

Michael Greger MD | June 23, 15 at 05:00 AM | Health

Read More: apple juice, arsenic, brown rice syrup, cancer, carcinogens, Center for Food Safety, chicken, cooking methods, FDA, food additives, industrial toxins, Johns Hopkins University, lead, liver, meat, organic foods, parasites, persistent organic pollutants, pesticides, pork, poultry, rice, safety limits, turkey

In 2013, Maryland became the first state to ban the feeding of an arsenic-containing drug to chickens. This arsenic-containing drug is used to control parasites and gives chicken meat an "appealing pink color." In 2011, the FDA found that...

How Contaminated Are Our Children?

Michael Greger MD | June 18, 15 at 05:00 AM | Health

Read More: animal fat, animal products, arsenic, asthma, biomagnification, birth defects, breastfeeding, California, cancer, chicken, children, dairy, DDT, dieldrin, dioxins, ear health, endocrine disruptors, Europe, fish, heavy metals, immune function, immunosuppressive drugs, industrial toxins, lactation, lead, meat, men's health, mercury, persistent organic pollutants, pesticides, plant-based diets, poultry, respiratory infections, seafood, sore throat, throat health, tuna, turkey, vegans, vegetarians, women's health

In a study highlighted in my video, California Childen Are Contaminated, researchers analyzed the diets of California children ages two through seven to determine the cancer and non-cancer health effects from food contaminant exposures. It turns out food may...

Living Longer by Reducing Leucine Intake

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

Read More: Adventist Health Studies, aging, animal products, animal protein, apples, beans, cabbage, California, caloric restriction, chicken, China Study, cholesterol, dairy, Dr. T. Colin Campbell, eggs, enzymes, fish, fruit, grains, IGF-1, Japan, LDL cholesterol, leucine, lifespan, longevity, meat, mood, mortality, plant protein, plant-based diets, poultry, protein, rapamycin, side effects, standard American diet, TOR, turkey, vegans, vegetables, vegetarians

Many studies have shown that calorie restriction, without malnutrition, can increase lifespan and lower the risk of age-related diseases, such as cancer. However, for many people, calorie restriction clearly has its drawbacks. In the classic Minnesota Starvation Study, many...

Exploiting Autophagy to Live Longer

Michael Greger MD | June 11, 15 at 05:00 AM | Health

Read More: aging, autophagy, blood pressure, bone health, caloric restriction, calories, depression, Easter Island, elderly, enzymes, evolution, infertility, lifespan, longevity, mitochondria, mood, morbidity, mortality, muscle strength, oxidative stress, rapamycin, reproductive health, sexual health, TOR, wound healing

Thanks to advances in modern medicine, we are living longer lives, but we're doing it by lengthening the morbidity phase. In other words, we live longer, but sicker, lives (see my video: Americans Are Live Longer, but Sicker Lives)....

New DVD Reviews Best Bowel Movement Science

Michael Greger MD | June 9, 15 at 05:00 AM | Health

Read More: DVD

Of all human bodily functions, defecation has been described as perhaps the least studied and the least understood. Elimination doesn't just remove wastes from the body, but may play a vital role in hormonal, cholesterol, and bile acid regulation....

Blood Type Diet Perceived as "Crass Fraud"

Michael Greger MD | June 4, 15 at 05:00 AM | Health

Read More: Albert Einstein, Atkins diet, blood type diet, doughnuts, exercise, fat, fruit, meat, Norway, nutrition myths, rheumatoid arthritis, smoking, sugar, vegetables

It was Adolf Hitler who coined a propaganda technique he called, "The Big Lie," arguing that people may be more likely to believe colossal untruths, because they would not believe that others could have the impudence to distort the...

Why Do Heart Doctors Favor Surgery and Drugs Over Diet?

Michael Greger MD | June 2, 15 at 05:00 AM | Health

Read More: alternative medicine, AMA, brain disease, cancer, cardiovascular disease, cardiovascular health, cholesterol, Cleveland Clinic, coma, complementary medicine, Dr. Caldwell Esselstyn, heart disease, heart health, informed consent, LDL cholesterol, Lifestyle medicine, liver disease, liver health, medical ethics, medical profession, medications, morbidity, mortality, muscle health, plant-based diets, side effects, statins, stroke, surgery, vegans, vegetarians

When he was a surgeon at the Cleveland Clinic, Dr. Caldwell Esselstyn Jr. published a controversial paper in the American Journal of Cardiology, highlighted in my video, Fully Consensual Heart Disease Treatment, noting that heart bypass operations carry significant...

Phytates in Beans: Anti-Nutrient or Anti-Cancer?

Michael Greger MD | May 28, 15 at 05:00 AM | Health

Read More: antinutrients, beans, breast cancer, breast health, calcium, cancer, cancer survival, cardiovascular disease, cardiovascular health, chemotherapy, colon cancer, colon health, diabetes, fiber, fruit, grains, heart disease, heart health, kidney health, kidney stones, low-fat diets, metastases, mortality, National Cancer Institute, nuts, osteoporosis, phytates, phytic acid, polyps, prediabetes, seeds, side effects, vegetables, vitamins, women's health

In my videos, Phytates in the Prevention of Cancer and Phytates for Rehabilitating Cancer Cells, I described how phytates in beans may be the reason why legumes are so successful in preventing cancer and re-educating cancer cells. What about...

Colon Cancer Prevention: Is it the Fiber or the Phytates?

Michael Greger MD | May 21, 15 at 05:00 AM | Health

Read More: Adventist Health Studies, animal products, antinutrients, antioxidants, beans, cancer, chicken, chickpeas, colon cancer, colon health, DNA damage, Dr. Denis Burkitt, fiber, fish, grains, iron, lentils, meat, nuts, oxidative stress, phytates, phytic acid, plant-based diets, poultry, processed foods, red meat, split peas, standard American diet, turkey, Uganda, vegans, vegetarians, white meat

Dietary factors are considered the most important environmental risk factors for cancer. Within recent years, a large number of naturally occurring health-enhancing substances of plant origin known as phytonutrients have been recognized to have beneficial effects on certain cancers....

Low Carb Diets Found to Feed Heart Disease

Michael Greger MD | May 19, 15 at 05:00 AM | Health

Read More: abdominal fat, animal protein, Atkins diet, cardiovascular disease, cardiovascular health, chemotherapy, cholesterol, cocaine, Dr. Richard Fleming, fat, heart disease, heart health, LDL cholesterol, lifespan, longevity, low-carb diets, mortality, paleolithic diets, plant protein, plant-based diets, prehistoric diets, protein, Twinkies, vegans, vegetarians, weight loss

People going on low carb diets may not see a rise in their cholesterol levels. How is that possible? Because weight loss by any means can drop our cholesterol. We could go on an all-Twinkie diet and lower our...

Nuts May Extend Your Lifespan By About 2 years

Michael Greger MD | May 14, 15 at 05:00 AM | Health

Read More: abdominal fat, aging, almonds, blood sugar, body fat, brazil nuts, cancer, cardiovascular disease, cardiovascular health, cashews, chestnuts, cholesterol, chronic diseases, diabetes, fat, Harvard, heart disease, heart health, LDL cholesterol, lifespan, longevity, lung disease, lung health, macadamia nuts, mortality, nuts, obesity, olive oil, oxidative stress, peanuts, pecans, pine nuts, pistachios, prediabetes, PREDIMED, smoking, stroke, walnut, weight loss

We've known that increased nut consumption has been associated with a reduced risk of major chronic diseases, such as heart disease and diabetes. But do those who eat nuts actually live longer lives? Clinical trials have shown nuts help...

How Curry Can Kill Cancer Cells

Michael Greger MD | May 12, 15 at 05:00 AM | Health

Read More: aging, cancer, carcinogens, cell death, chemotherapy, colon cancer, colon health, curcumin, curry powder, kidney cancer, kidney health, lung cancer, lung health, medications, nasal cavity cancer, pregnancy, skin cancer, skin health, spices, supplements, throat cancer, throat health, turmeric, water

It is estimated that the human body consists of ten or so trillion cells. Almost all of these cells get turned over within approximately 100 days. That means we're like a new person every three months. We reinvent ourselves...

Testing Turmeric on Smokers

Michael Greger MD | May 7, 15 at 05:00 AM | Health

Read More: antioxidants, cancer, carcinogens, chemotherapy, curcumin, curry powder, DNA damage, India, metastases, National Cancer Institute, oxidative stress, smoking, spices, tobacco, turmeric

Researchers are becoming increasingly aware of "plant-derived substances that act as chemopreventive agents." Chemopreventatives are substances that help prevent cancer, as opposed to chemotherapy agents aimed at treating cancer. These plant-derived substances are not only inexpensive, they are also...