Dr. John D Barker M.D.

Gallstones are hardened, stone-like particles formed from the contents of the gallbladder. The stones vary in size, from very small grains to the size of a golf ball. In general, small gallstones may remain asymptomatic. But when the stones block the duct, it affects the movement of bile into the...

IntroductionNausea is an unpleasant feeling that is usually experienced before vomiting. Constant or persistent nausea is characterized by feeling nauseous for more than 24 hours. Although nausea and vomiting often come together, vomiting may occur without feeling nauseous and nausea can occur...

Celiac disease is an autoimmune disorder that leads to damage in the lining of the small intestine when exposed to gluten in certain foods. People who have celiac disease are unable to properly digest gluten, a protein found in wheat, rye, and barley. In these individuals, the damage that results...

Celiac disease is a disease of the immune system that is said to be triggered by gluten, the protein in wheat products. It affects a few million people in the U.S. each year. Most who are diagnosed will go on a gluten-free diet, as that is currently the only treatment doctors know of which leads to...

Ulcerative colitis is a chronic inflammatory disease that affects more than 1 million Americans. Brooke Bogdan, founder of Companion Magazine for IBD, shares her story in hopes of raising awareness and helping others understand that they are not alone.Brooke’s storyWhile returning home from a...

When it comes to celiac disease, there is a lot that is known and a whole lot more that still remains a mystery.  At a recent symposium called Beyond Celiac Research, experts came together to discuss what can be done to improve and increase research around celiac disease and possible treatment...