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Gerard E. Mullin, M.D.
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Gerard E. Mullin, MD, is a board-certified internist, gastroenterologist and nutritionist. He is an associate professor of medicine and serves as the director of Integrative GI Nutrition Services at The Johns Hopkins Hospital. Dr. Mullin has accrued over 20 years of clinical experience in the fields of integrative gastroenterology and nutrition and he earned a master's degree in nutrition while in practice in 1994.

Dr. Mullin is regarded as an authority in integrative gastroenterology and was commissioned by Andrew Weil, MD to edit Integrative Gastroenterology for his integrative medicine library for Oxford University Press. Dr. Mullin teaches medical professionals at international conferences on the role of nutrition and lifestyle and the gut microbiome in digestive health and weight control.

He is the author of several professional desk reference and trade books including his latest The Gut Balance Revolution: Boost Your Metabolism, Restore Your Inner Ecology, and Lose the Weight for Good!.

Mullin's academic biography is robust. His contributions and discoveries have led to multiple awards and his selection as one of America's Top Physicians.

Dr. Mullin was the youngest person to receive an honorary membership from the American Dietetic Association (now The Academy of Nutrition and Dietetics) in 2009. He also received the Grace A. Goldsmith award presented by the American College of Nutrition in November 2011. This special award acknowledges a scientist who is under the age of 50 years, for significant achievements in the field of nutrition.

He is a founding member of the American Board of Integrative Medicine and serves on a number of nutrition exam committees and boards and was recently selected to serve as vice-chair for the medical practice section of the American Society for Parenteral and Enteral Nutrition. Dr. Mullin also serves on the editorial board of numerous professional journals for gastroenterology, nutrition and integrative medicine.

Dr. Mullin has contributed to hundreds of consumer trade magazine articles who have featured his advice and professional journal papers dealing with digestive health, nutrition and wellness. He has been interviewed on radio and television and has contributed to stories in the Associated Press; ABC News; "Good Morning America"; Chicago Tribune; Newsday; Martha Stewart Living, O, the Oprah Magazine; Rodale Press, Consumers Digest, Reader's Digest, Prevention, Natural Health magazine, More Magazine, Ladies' Home Journal, Cooking Light, Men's Health, Good Housekeeping, Dr. Oz The Good Life, Glamour, Women's World, Natural Health, Body & Soul, and much more.

Visit Dr. Mullin's website to learn more.

Entries by Gerard E. Mullin, M.D.

Gut Imbalance: The Modern Plague and Hidden Epidemic

(2) Comments | Posted June 23, 2015 | 1:26 PM


Gut bugs. Why are they the buzz of the media and a hot topic of scientific research?

The average human being has about 100 trillion gut microbes with most being located in your lower intestines and trillions more surrounding and...

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Why Your Gut Microbiome Could Hold the Key to Solving the Obesity Epidemic

(20) Comments | Posted June 12, 2015 | 7:12 PM


Until only a few years ago, medical science taught doctors that the three to five pounds of bacteria that are housed in our digestive system played a limited role in our well-being.

As the former dean of Harvard medical school, Sydney Burwell...

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Whole Grains: Dietary Angel or Demon?

(5) Comments | Posted May 1, 2015 | 4:39 PM

Whole grains. Should we eat them or not?

Controversy abounds. On the one hand, whole grains have a long history of inclusion in healthy eating programs and have been a dietary staple in traditional cultures for millennia. Indeed, national institutions such as the American Heart Association recommend whole...

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The Surprising Truth About Gluten

(3) Comments | Posted March 21, 2015 | 4:14 PM

Gluten. I can think of no other protein that has gotten so much bad press in the last decade. Justified or not? Read on, and let me know what you think.

Celebrity authors and credible authorities alike have increasingly taken a stand against gluten. The result is a nationwide anti-gluten...

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Celiac Disease Is More Common Than We Previously Thought

(5) Comments | Posted March 10, 2015 | 5:01 PM

Celiac disease (CD) is an autoimmune disorder that is triggered by the consumption of gluten-containing grains such as wheat, barley, rye and spelt. It has been long thought of as a rare illness that begins in childhood and manifests as diarrhea and weight loss due to malabsorption of nutrients from...

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A Myriad of Benefits Brewing?

(2) Comments | Posted September 18, 2013 | 2:11 PM

Why drink coffee? Ask any of the over 60 percent of Americans who drink coffee and the answer will likely be its energy boosting ingredient: caffeine. For some, this benefit is outweighed by the beverage's tendency to aggravate anxiety, heartburn, and insomnia. But new research shows that those...

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Healthy Eating for the Holidays

(0) Comments | Posted November 19, 2012 | 12:30 PM

Thanksgiving: a joyous celebration of... overeating.

Turkey Day may only come around once a year, but it is only the beginning. The merry months that follow are filled with family feasts, business buffets, and celebratory cocktails. This holiday season, get jolly but stay healthy -- here's how:

Getting Started

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Concerns About Acid-Blockers Are Being Raised

(4) Comments | Posted August 8, 2012 | 3:19 PM

The New York Times recently reported on the "Host of Ills" associated with the long-term use of Proton Pump Inhibitors. More than 50 million Americans experience heartburn frequently (two or more days per week), and Proton Pump Inhibitors (PPIs) such as Prilosec, Prevacid and Nexium are...

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Colorize Your Plate!

(3) Comments | Posted April 24, 2012 | 9:00 PM

Spring is the perfect time to embrace renewal in every aspect of our lives, including our health. Last month was National Nutrition Month, the theme of which was "Get Your Plate in Shape." With both nutrition and new beginnings on the radar, let's use this opportunity to take a closer...

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Qnexa: A Magic Bullet for Weight Loss?

(9) Comments | Posted March 21, 2012 | 12:07 PM

For the first time in 13 years, another weight loss medication is coming to market with the promise to work like a magic bullet for obesity. Sound familiar?

In late February, an advisory panel to the Food and Drug Administration (FDA) voted 20 to 2 to recommend that Qnexa...

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The Crucial Test That Can Save Your Life

(9) Comments | Posted March 9, 2012 | 4:30 PM

This week was very sobering. I met a very young lady who was being evaluated for the recent onset of abdominal pain that was progressing in severity without explanation. An abdominal ultrasound discovered a large abdominal mass and subsequent testing confirmed that she had

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New Year, New Diet Confusion

(4) Comments | Posted January 27, 2012 | 3:52 PM

For those of us who have resolved to eat healthier and lose weight in the new year, that goal may have just gotten tougher to achieve. If you were already confused about what to eat, a study published on Jan. 4, 2012, in the Journal of the American Medical Association...

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Your Good Gut Guide to a Healthy New Year

(3) Comments | Posted December 31, 2011 | 3:43 PM

Come fall, our days and nights begin to revolve around friends, family, parties and, of course, food! Of course, by the time New Year's Day rolls around, most of us are repentant, willing to do whatever it takes to make this year the year we get and stay healthy --...

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10 Tips For Combating Irregularity

(1) Comments | Posted August 22, 2011 | 8:51 AM

If you've ever consulted a gastroenterologist, chances are it might have been because you weren't "regular." Constipation, according to the National Digestive Diseases Information Clearinghouse, means having fewer than three bowel movements per week. A panel of international experts cites difficulty during defecation (straining during more...

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From Pyramid to Plate: How Healthy is the New USDA Nutrition Icon?

(5) Comments | Posted July 25, 2011 | 4:55 PM

As a nutrition specialist, I see many patients who are seeking advice about their diet and its possible connection to their health.

Take Anthony, who came to see me in consultation for improved management of his indigestion. Anthony had been eating a steady diet of high-calorie fast foods but...

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5 Natural Remedies For IBS

(3) Comments | Posted June 29, 2011 | 9:24 AM

Is Irritable Bowel Syndrome Cramping Your Style?

Our bowel habits usually aren't cocktail party fodder, but some gastrointestinal problems are so common that several of your fellow partygoers are likely to suffer from one of them. Take irritable bowel syndrome (IBS), for example: This condition -- which affects...

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