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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

Are Dental X-Rays Safe?

Michael Greger MD | February 18, 14 at 05:00 AM | Health

Read More: American Dental Association, brain tumour, cancer, dental X-rays, dentists, doctors, iatrogenic harm, intracranial meningioma, meningioma, oral health, radiation, X-rays

                Every year, doctors cause an estimated 29,000 cancers a year dosing patients with X-rays during CAT scans. What about dentists? 100 million Americans are exposed to dental X-rays every year, but don’t...

How Risky are CT Scans?

Michael Greger MD | February 13, 14 at 05:00 AM | Health

Read More: angiograms, brain tumors, breast cancer, cancer, CAT scan, children, CT scan, heart disease, iatrogenic harm, leukemia, pediatrics, prescription drugs, radiation, thallium heart scans, X-ray computer tomography, X-rays

                The greatest radiation exposure risk comes not from the Fukushima fallout or the polonium naturally found in all seafood (see my last video, Fukushima and Radioactivity in Seafood), but from doctors. This...

Fukushima and Radioactivity in Seafood

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

Read More: angiograms, brain tumors, breast cancer, cancer, CAT scan, children, CT scan, heart disease, iatrogenic harm, leukemia, pediatrics, prescription drugs, radiation, thallium heart scans, X-ray computer tomography, X-rays

                With prevailing westerly winds over Japan, radioactive fallout from the Fukushima nuclear power plant tragedy was detected throughout North America at levels comparable to those seen 25 years earlier from Chernobyl, the...

Tea and Flouride Risk

Michael Greger MD | February 6, 14 at 05:00 AM | Health

Read More: antibiotics, barley coffee, cavities, children's health, coffee, cranberries, decaf, decaffeinated tea, dehydration, dental, dental disease, dental fluorosis, dental health, dental plaque, fluoride, fluoride toxicity, fluorosis, gastrointestinal health, green tea, H. Pylori, herbal tea, oral health, phytonutrients, plaque, stomach health, Streptococcus mutans, tea, teeth, ulcers, wine

                If cranberries are so good at keeping bacteria from sticking to the wall of the bladder (see my video Can Cranberry Juice Treat Bladder Infections?), what about keeping bacteria from sticking to...

Does Cranberry Juice Work Against Bladder Infections?

Michael Greger MD | February 4, 14 at 05:00 AM | Health

Read More: antibiotics, bacteria, bladder disease, bladder health, bladder infection, cranberries, cranberry juice, E. Coli, Escherichia coli, phytochemicals, phytonutrients, urinary tract infection, UTI, white cranberry juice

                How could any bacteria cause a bladder infection without just getting flushed away—literally? Bladder infections may make sense if we’re not drinking enough or if we leave behind a stagnant pool because...

Dr. Greger's New Nutrition DVD Now Available

Michael Greger MD | January 30, 14 at 05:00 AM | Health

Read More: DVD

                  The newest volume of my Latest in Clinical Nutrition DVD series is now out. Order on my website or through Amazon (all proceeds go to the 501c3 nonprofit charity that keeps...

How Avoiding Chicken Could Prevent Bladder Infections

Michael Greger MD | January 28, 14 at 05:00 AM | Health

Read More: antibiotic resistance, antibiotics, bladder infection, Campylobacter, chicken, cooking, cross-contamination, E. coli, Escherichia coli, fecal bacteria, fecal contamination, gut flora, meat, pathogens, preparation, rectal bacteria, rectal flora, Salmonella, superbugs, urinary tract health, urinary tract infection, UTI, zoonoses, zoonotic diseases

                Where do bladder infections come from? Back in the ’70s, longitudinal studies of women over time showed that the movement of rectal bacteria into the vaginal area preceded the appearance of the...

Preventing Bacterial Vaginosis With Diet

Michael Greger MD | January 23, 14 at 05:00 AM | Health

Read More: bacterial vaginosis, beta carotene, biogenic amines, chicken, dairy, desserts, douching, fat, fishy odor, fruits, pH, phytonutrients, putrescine, reproductive health, saturated fat, vagina, vaginal health, vegetables, vitamin C, Whiff Test

                In the same way fermented pickles, kimchi, and sauerkraut foster the growth of good bacteria by maintaining an acidic environment, so does the human vagina. The normal pH of one’s vagina is...

Treating Migraines With Lavender

Michael Greger MD | January 21, 14 at 05:00 AM | Health

Read More: anesthetic, anxiety, aromatherapy, aspartame, headaches, Ibuprofen, Imitrex, lavender, lavender essential oil, mental health, mental illness, migraine headaches, migraines, mood, pain, pain management, parasites, pregnancy, saffron, Tylenol

                Lavender has been studied recently for several purposes, including treatment of mood and anxiety disorders (see, for example, the video I profiled in my last post, Lavender for Generalized Anxiety Disorder). Though...

Using Lavender to Treat Anxiety

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

Read More: anxiety, aromatherapy, Ativan, benzodiazepines, brain waves, downers, hormone-disruptors, hormones, lavender, lavender oil, lorazepam, massage, saffron, sedatives, side-effects

                Lavender oil, which is distilled from lavender flowers, is often used in aromatherapy and massage. Despite its popularity, only recently have scientific investigations been undertaken into its biological activity. While there have...

Top 10 Most Popular Videos of 2013

Michael Greger MD | January 9, 14 at 05:00 AM | Health

                  2013 was a banner year for NutritionFacts.org. Thanks to the collective enthusiasm for sharing this work from our subscribers, twitter followers, and 100,000 Facebook fans, we averaged more than a million...

How Probiotics Affect Mental Health

Michael Greger MD | January 7, 14 at 05:00 AM | Health

Read More: anger, anxiety, bacteria, bowel movements, colectomy, colon, constipation, depression, emotional health, enteric nervous system, enteric neuroscience, fecal transplant, fibromyalgia, gut dysfunction, gut flora, intestinal flora, intestinal putrefaction, lobotomy, mastectomy, mental health, mental illness, mood, plant-based diet, probiotics, psychiatric illness, Thorazine, vegan, vegetarian

                  Before Thorazine was invented in 1950, mental illness was often treated surgically. In fact, in 1949 the inventor of the lobotomy was awarded the Nobel Prize. Before tens of thousands were...

How Should I Take Probiotics?

Michael Greger MD | January 2, 14 at 05:00 AM | Health

Read More: apple juice, dosage, fat, health food stores, milk, natural food stores, oatmeal, pharmacists, prebiotics, probiotics, supplements, vitamin D, water

                Foods appear to be better carriers for probiotics than supplements, but if one chooses to go with the supplement route, should they be taken before, during, or after meals? The package labeling...

Probiotics During Cold Season?

Michael Greger MD | December 31, 13 at 05:00 AM | Health

Read More: allergies, antibiotics, asthma, babies, bloating, c-section, caesarean section, cancer, cold, common cold, diarrhea, fiber, fruit, gastroenteritis, gut flora, immune function, immune system, infants, infections, intestinal infections, lactic acid bacteria, prebiotics, probiotics, respiratory infections, soy, soy yogurt, supplements, vaginal delivery, vaginal flora, vegetables, white blood cells, yogurt

                Babies delivered via caesarean section appear to be at increased risk for various allergic diseases. The thought is that vaginal delivery leads to the first colonization of the baby’s gut with maternal...

Probiotics and Diarrhea

Michael Greger MD | December 26, 13 at 05:00 AM | Health

Read More: alternative medicine, antibiotics, diarrhea, fecal enema, fecal transplant, gastroenteritis, gut flora, infection, Lactobacillus rhamnosis, mold, probiotics, Saccharomyces boulardii

                Probiotics have slowly moved from the field of alternative medicine into the mainstream, particularly for the prevention of antibiotic-associated diarrhea and the treatment of gastroenteritis. After taking antibiotics, up to 40 percent...

Mushrooms and Immunity

Michael Greger MD | December 24, 13 at 05:00 AM | Health

Read More: allergies, amla, autoimmune diseases, breast glands, cancer, chronic inflammation, digestive tract, eyeballs, immune function, immune system, immunoglobulin A, Indian gooseberries, infection, inflammation, inflammatory diseases, mouth, mucosal immunity, mucous membrane, mushrooms, phytonutrients, pyrogallol, reproductive system, skin, type A antibodies, urinary system, white button mushrooms, white mushrooms

                There’re lots of products that promise to boost your immune system—who wouldn’t want that? Well, millions of people suffer from autoimmune diseases, inflammatory diseases, and allergies.  Their immune systems may already be...

Employment Opportunities at NutritionFacts.org

Michael Greger MD | December 21, 13 at 05:00 AM | Health

Read More: jobs

                Interested in dedicating yourself to advancing a lifesaving cause? Assuming we reach our end-of-year donation drive goals, I am hoping to bring on two full-time salaried staff for 2014. One position is...

Raspberries Reverse Precancerous Lesions

Michael Greger MD | December 19, 13 at 05:00 AM | Health

Read More: alcohol, black raspberries, cancer, esophageal cancer, freeze-dried, fruits, intraepithelial neoplasia, jam, marijuana, obesity, oral cancer, oral lesions, precancerous changes, precancerous growths, precancerous lesions, raspberries, smoking, strawberries, tobacco, vegetables

                More berried treasure! A story similar to the strawberries and esophageal cancer revelation I documented in Strawberries versus Esophageal Cancer has emerged with black raspberries and oral cancer. Oral cancer is one...

Strawberries Can Reverse Precancerous Progression

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

Read More: American Association for Cancer Research, antioxidants, berries, cancer, cancer progression, cancer reversal, cancer survival, combinatorial strategies, dietary intervention, esophageal cancer, esophagus, fat, free radicals, fruit, meat, metastases, phytonutrients, plant-based diet, precancerous lesions, precancerous progression, prostate cancer, strawberries, vegan, vegetarian

                In my last two posts, Which Fruit is Best at Fighting Cancer? and Anti-Cancer Nutrient Synergy in Cranberries I described what various common fruits could do to human cancer cells in a...