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Michael Greger, M.D., is a physician, author, and internationally recognized professional speaker on a number of important public health issues.

Blog Entries by Michael Greger MD

Cantaloupe and Listeria: an estimated 85% of cases are from deli meats, not melons

Michael Greger MD | September 30, 11 at 05:00 AM | Health

Read More: alfalfa sprouts, bacteria, cantaloupe, cheese, cold cuts, dairy, deli meat, eggs, hot dogs, Listeria, livestock, lunch meat, meat pâté, milk, pork, poultry, salmonella, seafood

More than a dozen deaths have been reported in the national outbreak of listeriosis linked to cantaloupes from a farm in Colorado, making it the third deadliest recorded Listeria outbreak in U.S. history, after a 1985 outbreak linked to...

Bowel movements: the scoop on poop

Michael Greger MD | September 29, 11 at 05:00 AM | Health

Read More: beets, bowel movements, breast cancer, colon, diverticulosis, fiber, meat, omnivores, Painter and Burkitt, stool shape, stool size, vegans, vegetarians

Years ago we learned that those eating plant-based diets are just "regular" people. In a study comparing omnivores, vegetarians, and vegans profiled in my Bowel Movement Frequency video on NutritionFacts.org, researchers found a "very clear trend towards an increasing...

Breast Cancer and Diet

Michael Greger MD | September 26, 11 at 05:00 AM | Health

Read More: acrylamide, alcohol, anabolic steroids, apples, beans, black beans, breast cancer, broccoli, cabbage, cancer, dairy, estrogen, exercise, flax seeds, folic acid, garlic, heterocyclic amines, hormones, industrial pollutants, kale, Kimchi, leeks, meat, melatonin, multivitamin, mushroom, onions, plant-based diet, prostate, puberty, soy foods, strawberries, Tamoxifen, tea, turmeric, vegetables, women's health

October is National Breast Cancer Awareness Month, a concept invented more than 25 years ago by Imperial Chemical Industries with the curious mantra "Early Detection Is Your Best Prevention." Of course early detection (by definition) doesn't prevent breast cancer...

NutritionFacts.org: the first month

Michael Greger MD | September 25, 11 at 07:35 PM | Health

Read More: antioxidants, apple juice, Bristol Stool Scale, cancer, chicken, Dr. Oz, Forks Over Knives, goji berries, Green tea, Kombucha tea, PCRM, peanut butter, pork, vegetables, vinegar, vitamin B12

Reposted from Vegan Mainstream. NutritionFacts.org is the first non-commercial, science-based website to provide daily updates on the latest in nutrition research, presented in short, easy-to-understand video segments. A labor of love brought to life by the Jesse & Julie...

Dr. Oz, apple juice, and arsenic: chicken may have 10 times more

Michael Greger MD | September 19, 11 at 05:00 AM | Health

Read More: apple juice, arsenic, cancer, cardiovascul, chicken, China, diabetes, Dr. Oz, Environmental Protection Agency, Johns Hopkins School of Public Health, pesticides, poultry, poultry industry, USDA

Dr. Oz is right to be concerned about arsenic contamination in our food supply. According to scientists from the Johns Hopkins School of Public Health and the Environmental Protection Agency, "Arsenic is a human carcinogen, and is also associated...

Ask the Doctor: Q&A with Michael Greger, M.D. (Week 2)

Michael Greger MD | September 18, 11 at 12:00 PM | Health

Read More: chocolate, cocoa, flax, omega 3, omega 3 supplement, omega 6, omega 9, vitamin B12, vitamin D, walnuts

This is just a sampling of the 514 comments and questions I’ve responded to on NutritionFacts.org (so far!). Please feel free to leave any follow-up questions here or on any of the hundreds of videos on the more than a thousand topics covered...

Internships available at NutritionFacts.org

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

Reposted from my Latest in Nutrition e-newsletter (sign up for free here): CNN's recent documentary "The Last Heart Attack" featured Drs. Ornish and Esselstyn successfully preventing, stopping, and even reversing our number one killer--heart disease--with a plant-based diet. Though...

Eating chicken may lead to a smaller penis

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

Read More: chicken, eggs, genitalia, phthalates, poultry, pregnancy, sexual health

According to the best available science, three quarters of women find both penis length and girth "somewhat important" or "very important." What does this have to do with diet? Phthalates. Phthalates are chemical compounds used in a wide range...

Erectile dysfunction and diet

Michael Greger MD | September 14, 11 at 05:00 AM | Health

Read More: cardiovascular disease, coronary heart disease, erectile dysfunction, meat, plant-based diet, sexual function, stroke

One of my more risqué NutritionFacts.org videos, today's video-of-the-day Rosy Glow, touches on the relationship between erectile dysfunction and cardiovascular disease. Arteries are arteries, whether they're supplying blood to the heart or to other vital organs. And hardened arteries...

Optimum Nutrition Recommendations

Michael Greger MD | September 12, 11 at 05:00 AM | Health

Read More: beans, calcium, carotenoid, fruit, grains, greens, iodine, iron, nuts, omega 3s, phytonutrients, seeds, selenium, vegetables, vitamin B12, vitamin D

In today's NutritionFacts.org video-of-the-day Golden glow, and tomorrow's, Produce, not pills to increase physical attractiveness, I review the new research suggesting the consumption of dark green leafy vegetables improves the healthy appearance of Caucasians due to carotenoid deposition in...

Ask the Doctor: Q&A with Michael Greger, M.D.

Michael Greger MD | September 10, 11 at 11:35 AM | Health

Read More: Ask the Doctor, cholesterol, eggs, lycopene, raw food, supplements, tomatoes, vitamin B12, vitamin D

With hundreds of videos on more than a thousand topics and new content every day it may be hard to keep up with NutritionFacts.org! So I thought every weekend I'd start reposting some of the most popular back-and-forth of...

How much pus is there in milk?

Michael Greger MD | September 8, 11 at 05:00 AM | Health

Read More: dairy, dairy cows, hamburger, iodine, lameness, mastitis, pus

In the new NutritionFacts.org video-of-the-day today, I note that the antiseptics used to disinfect cow teats can provide a source of iodine, but have been found to boost the level of pus in the milk of cows with staph-infected...

Natural Alzheimer's treatment

Michael Greger MD | September 6, 11 at 05:00 AM | Health

Read More: Alzheimer's, cholesterol, dementia, phytonutrients, saffron, World Health Organization

September is Alzheimer's Month, in recognition of the five million Americans stricken with the devastating disease, now the sixth leading cause of death in the United States. We've known for almost 20 years that compared to long-time vegetarians, those...

Contagion: bad timing for CDC report of new swine flu strain

Michael Greger MD | September 4, 11 at 08:20 AM | Health

Read More: CDC, Centers for Disease Control and Prevention, children, Contagion, epidemic, flu, foodborne illness, influenza, pandemic, pigs, pork, swine flu, virus

A week before the premiere of Contagion, a star-studded thriller about (spoiler alert!) a pork-borne pandemic, is unfortunate timing for the Centers for Disease Control and Prevention to announce the identification of a new strain of swine flu in...

Physician-assisted suicide? When doctors give nutrition advice

Michael Greger MD | September 3, 11 at 06:00 AM | Health

Read More: medical education, medical school, nutrition, PCRM, The Last Heart Attack

In our society, we physicians are afforded extraordinary power. "In the case of the United States," noted an article in the Journal of Medicine and Philosophy, "the question of how a profession held in low esteem and mired in...

Bad Egg

Michael Greger MD | August 31, 11 at 11:00 AM | Health

Read More: cholesterol, diabetes, eggs, gestational diabetes, Harvard, heart failure, mortality, Physician's Health Study

In 2008, the Harvard Physician's Health Study, which followed 20,000 physicians for 20 years, found that those eating just a single egg a day or more had significantly higher total mortality risk, meaning eating just one egg a day...

Vitamin B12: how much, how often?

Michael Greger MD | August 30, 11 at 06:36 AM | Health

Read More: Airborne supplements, Alli, Applebee's, Burger King, Centrum, Chick-fil-A, Chili's, Coca-Cola, dairy, Dow Chemical, Dr Greger, Dr Gregor, Eggbeaters, fish oil, Flomax, Häagen-Dazs, Herbalife, Juice Plus+, KFC, Lipitor, McDonald's, Michael Gregor, milk, mucus, Nutrasweet, nutritional yeast, Pop Tarts, Purevia, red yeast rice, spirulina, Splenda, Sugar Twin, supplements, Sweet and Low, Sweet One, TGI Friday's, Truvia, Vaseline, vitamin B12, weight loss

This week NutritionFacts.org celebrates the upload of its 300th video. Though the site is officially only 9 days old, it launched "preloaded" with 288 videos taken from the last four years of my Latest in Clinical Nutrition DVD series....

Soy and breast cancer: an update

Michael Greger MD | August 29, 11 at 03:06 PM | Health

Read More: breast cancer, estrogen, phytoestrogens, puberty, soy, soya milk, soymilk

We've known that regular soy consumption appears to both prevent breast cancer--the number one cancer killer of young women--and prolong survival in women battling the dreaded disease, but we haven't understood why. Soybeans naturally contain weakly estrogenic compounds called...

Making day-to-day grocery store decisions

Michael Greger MD | August 28, 11 at 06:27 AM | Health

Read More: aluminum, blueberries, cholesterol, dairy, dog rose berries, Dr. Jenkins, JAMA, Lipitor, scombroid poisoning, soymilk, tuna

When I treasure hunt through the medical literature every year for NutritionFacts.org, there are three qualities I find myself using most often to sift the year's nutritional nuggets into video form. Is it groundbreaking? Is it interesting? Is it practical?...

Vegan B12 deficiency: putting it into perspective

Michael Greger MD | August 25, 11 at 04:00 AM | Health

Read More: Bill Clinton, diabetes, heart disease, hypertension, obesity, plant-based diet, supplements, vegan, vitamin B12

As excitement builds towards the premiere this Saturday at 8 and 11pm ET of CNN's new documentary The Last Heart Attack--documenting Bill Clinton's attempt to reverse his heart disease through diet--pundits are eager to point out the downsides. Yes,...