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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

No More Than a Quart a Day of Hibiscus Tea

Michael Greger MD | May 19, 16 at 05:00 AM | Health

Read More: aluminum, antacids, black tea, breast milk, children, citric acid, citrus, fruit juice, green tea, heavy metals, herbal tea, hibiscus tea, iron, kidney failure, lemons, limes, manganese, oolong tea, orange juice, pregnancy, safety limits, tea, white tea, World Health Organization

Over the counter antacids are probably the most important source for human aluminum exposure in terms of dose. For example, Maalox, taken as directed, can exceed the daily safety limit more than 100-fold, and nowhere on the label does...

Aluminum Levels in Tea

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

Read More: aluminum, Alzheimer's disease, antacids, bioavailability, black tea, brain disease, brain health, candy, cans, cheese, dementia, gravy, green tea, heavy metals, herbal tea, hibiscus tea, junk food, kidney failure, oolong tea, phytonutrients, processed foods, safety limits, tea, water, World Health Organization

While aluminum is the third most abundant element on Earth, it may not be good for our brain, something we learned studying foundry workers exposed to particularly high levels. Although the role of aluminum in the development of brain...

Rinse Your Mouth After Sour Foods and Drinks

Michael Greger MD | May 12, 16 at 05:00 AM | Health

Read More: blackberries, blood pressure, burgers, citrus, Coca-Cola, dental health, erectile dysfunction, food additives, fruit, hamburgers, herbal tea, hibiscus tea, hypertension, impotence, liver disease, liver failure, meat, mortality, oral health, orange juice, periodontal disease, plant-based diets, side effects, tea, vegans, vegetables, water

Hibiscus tea has been found to be as effective at lowering blood pressure as a leading hypertension drug without the potential side-effects (which include everything from lack of strength to impotence, including rare cases of potentially fatal liver damage)....

Plant-Based Diets for Hypertension

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

Read More: animal fat, animal protein, athletes, blood pressure, calories, cholesterol, dairy, DASH diet, diabetes, eggs, exercise, fish, fruit, heart disease, heart health, herbal tea, hibiscus tea, hypertension, junk food, Lifestyle medicine, meat, mortality, nitric oxide, obesity, plant protein, plant-based diets, processed foods, salt, side effects, standard American diet, stroke, tea, vegans, vegetables, vegetarians, weight loss, World Health Organization

Recently, researchers from Taiwan pitted the herbal tea hibiscus against obesity. They gave hibiscus to overweight individuals and reported that subjects showing reduced body weight. However, after 12 weeks on hibiscus subjects only lost about three pounds, only one...

How to Treat Prediabetes with Diet

Michael Greger MD | May 5, 16 at 05:00 AM | Health

Read More: American Diabetes Association, calories, cholesterol, chronic diseases, dairy, diabetes, eggs, exercise, fat, fiber, flax seeds, grains, Institute of Medicine, insulin, junk food, Lifestyle medicine, meat, medical education, mortality, omega-3 fatty acids, phytosterols, plant-based diets, prediabetes, processed foods, saturated fat, sugar, trans fats

For people with prediabetes, lifestyle modification is considered "the cornerstone of diabetes prevention." Diet-wise, this means individuals with prediabetes or diabetes should aim to reduce their intake of excess calories, saturated fat, and trans fat. Too many of us...

Are Sprouted Lentils Healthier Than Canned Lentils?

Michael Greger MD | May 3, 16 at 05:00 AM | Health

Read More: aging, Alzheimer's disease, anthocyanins, antioxidants, astrocytes, beans, boiling, brain disease, brain health, breast cancer, cancer, cans, chickpeas, chronic diseases, cognition, cooking methods, dementia, elderly, kale, kidney cancer, legumes, lentils, Lou Gehrig's disease, Parkinson's disease, phenolics, phytonutrients, polyphenols, raw food, split peas, sprouting

Beans, chickpeas, split peas and lentils are packed with nutrients and play a role in the prevention of chronic disease, but most can't be eaten raw. Some can be sprouted, though. Boiling is the most common cooking method, which...

Egg Consumption and LDL Cholesterol Size

Michael Greger MD | April 28, 16 at 05:00 AM | Health

Read More: American Egg Board, cholesterol, choline, corn, eggs, HDL cholesterol, heart disease, heart health, industry influence, LDL cholesterol, lutein, mortality, phytonutrients, spinach, stroke, zeaxanthin

Maria Fernandez has received nearly a half million dollars from the egg industry and writes papers like "Rethinking dietary cholesterol." She admits that eggs can raise LDL cholesterol, bad cholesterol, but argues that HDL, so-called "good cholesterol," also rises,...

How to Protect Our Telomeres with Diet

Michael Greger MD | April 26, 16 at 05:00 AM | Health

Read More: aging, animal fats, animal products, antioxidants, athletes, birth defects, bologna, butter, calories, cancer, cardiovascular disease, cardiovascular health, cholesterol, dairy, DNA damage, Dr. Dean Ornish, eggs, exercise, fiber, fish, fruit, ham, heart disease, heart health, hot dogs, inflammation, LDL cholesterol, lifespan, longevity, meat, meditation, mortality, oxidative stress, palmitic acid, phytonutrients, plant-based diets, processed foods, processed meat, salami, saturated fat, stress, telomeres, vegetables, vitamins, weight loss

In my video, Does Meditation Affect Cellular Aging?, I discussed how stress reduction through meditation might be able to lengthen telomeres, the protective caps at the tips of our chromosomes that tend to deplete as we age. What about...

How Many Minutes of Daily Meditation to Combat Stress?

Michael Greger MD | April 21, 16 at 05:00 AM | Health

Read More: aging, beans, cancer, cardiovascular disease, cardiovascular health, chronic diseases, DNA damage, Dr. Dean Ornish, exercise, fat, fruit, grains, heart disease, heart health, longevity, meditation, plant-based diets, prostate cancer, stress, telomeres, vegetables

In the film The Holiday, Cameron Diaz exclaims "Severe stress ... causes the DNA in our cells to shrink until they can no longer replicate." Did Hollywood get the science right? The enzyme that builds and maintains the caps...

New Employment Opportunities at NutritionFacts.org

Michael Greger MD | April 19, 16 at 05:00 AM | Health

Read More: jobs

Interested in dedicating yourself to advancing a lifesaving cause? Due to the tremendous success of How Not to Die, traffic on NutritionFacts.org is up 36%! That's the largest quarterly bump in our history. We're up to nearly 100,000 views...

Can Turmeric Help with Alzheimer's?

Michael Greger MD | April 14, 16 at 05:00 AM | Health

Read More: alternative medicine, Alzheimer's disease, brain disease, brain health, cognition, complementary medicine, curcumin, dementia, depression, mental health, mood, patent, spices, supermarkets, supplements, turmeric

The spice turmeric may help prevent Alzheimer's disease (See Preventing Alzheimer's with Turmeric), but what about treating Alzheimer's disease with turmeric? An exciting case series was published in 2012 (highlighted in my video, Treating Alzheimer's with Turmeric): three Alzheimer's...

Might Turmeric Help Prevent Alzheimer's?

Michael Greger MD | April 12, 16 at 05:00 AM | Health

Read More: Alzheimer's disease, animal products, brain disease, brain health, chicken, chickpeas, cognition, curcumin, curry powder, dementia, eggs, India, kidney health, liver health, meat, poultry, red meat, spices, stomach health, turmeric, vegans, vegetarians, white meat

There are plenty of anti-inflammatory drugs out there that may reduce the risk of Alzheimer's disease, but stomach, liver, and kidney toxicity precludes their widespread use. So maybe using an anti-inflammatory food like the spice, turmeric, found in curry...

Eating Garlic and Raisins May Help Prevent Preterm Birth

Michael Greger MD | April 7, 16 at 05:00 AM | Health

Read More: aspartame, berries, birth defects, cardiovascular disease, cardiovascular health, diabetes, dried fruit, fiber, fruit, garlic, grains, heart disease, heart health, oils, onions, plant-based diets, prediabetes, pregnancy, probiotics, processed meat, raisins, saturated fat, soda, standard American diet, vegetables, water, women's health

The United States has one of the worst premature birth rates in the world, now ranking 131st worldwide. Even worse, over the last few decades, the rate of preterm birth in the U.S. has been going up. We've known...

Dioxins in U.S. Farm-Raised Catfish

Michael Greger MD | April 5, 16 at 05:00 AM | Health

Read More: animal fat, animal products, cancer, cardiovascular disease, cardiovascular health, catfish, chicken, China, dairy, dioxins, eggs, factory farming practices, farm animals, FDA, feed additives, fish, heart disease, heart health, industrial toxins, meat, milk, mineral clay, persistent organic pollutants, pesticides, plant-based diets, poultry, Taiwan, vegans, vegetarians

Dioxins are highly toxic pollutants that accumulate in tissue fat. Almost all dioxins found in people who don't work in toxic waste dumps or something similarly hazardous are believed to come from food, especially meat, milk, and fish, which...

Dr. Greger's new Google Talk

Michael Greger MD | March 31, 16 at 10:15 AM | Health

Read More: DVD

I was recently honored to be invited to Google to present on How Not to Die, and they made it into an official Talk@Google! View the presentation I've been giving around the country on my book tour for free...

When Charities Collaborate With the Food Industry

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

Read More: animal products, beans, breast cancer, breast health, calories, cancer, chicken, Coca-cola, exercise, fat, fruit, frying, industry influence, junk food, obesity, Pepsi, poultry, processed foods, salt, smoking, soda, standard American diet, subsidies, sugar, tobacco, vegetables, weight loss, women's health

When the history of the world's attempt to address obesity is written, one researcher writes, "the greatest failure may be collaboration with and appeasement of the food industry." For instance, Yum! Brands, who owns Kentucky Fried Chicken, linked up...

Four Brazil Nuts Once a Month...

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

Read More: brazil nuts, cardiovascular disease, cardiovascular health, cholesterol, HDL cholesterol, heart disease, heart healtha, kidney health, LDL cholesterol, liver health, nuts, safety limits, selenium, statins

One of the craziest studies I read all year involved feeding people a single serving of Brazil nuts to see what it would do to the cholesterol levels of healthy volunteers. They gave ten men and women a single...

The Effects of Dietary Cholesterol on Blood Cholesterol

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

Read More: American Egg Board, animal fat, bacon, cardiovascular disease, cardiovascular health, cholesterol, eggs, fat, heart disease, heart health, industry influence, LDL cholesterol, meat, pork, saturated fat, sausage, smoking, tobacco, triglycerides

Blood cholesterol levels are clearly increased by eating dietary cholesterol. In other words, putting cholesterol in our mouth means putting cholesterol in our blood, and it may also potentiate the harmful effects of saturated fats, meaning when we eat...

Why Don't More Doctors Practice Prevention?

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

Read More: alternative medicine, athletes, cardiovascular disease, cardiovascular health, cholesterol, complementary medicine, depression, fiber, Framingham Heart Study, fruit, heart disease, heart health, LDL cholesterol, Lifestyle medicine, mood, nuts, plant-based diets, statins, vegans, vegetarians

Why don't more doctors practice preventive cardiology? Time availability is a reason frequently cited by physicians, but if you probe a little deeper, the number one reason given was their perception that patients fear being deprived of all the...

Using Cherries to Treat Gout

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

Read More: alternative medicine, arthritis, cherries, complementary medicine, frozen fruit, gout, industry influence, joint disease, joint health, juice, pomegranate juice, uric acid

Over the last 40 years, the burden of gout, a painful inflammatory arthritis, has risen considerably, now affecting millions of Americans. In fact, gout is now the most common inflammatory arthritis in men and older women. In my video,...