Excessive gas can be an embarrassing problem. The condition is a result of air in your digestive tract or when you metabolize certain carbohydrates. It can also occur when bacteria grow in your small intestine, which is associated with inflammatory bowel disease and diabetes.

Acid reflux, also known as gastroesophageal reflux or, more commonly, heartburn, is a disorder in which the acid contents of the stomach flow upward into the esophagus and cause burning sensations. The esophagus is the tube connecting the stomach and throat.

Abdominal pain and soreness can be caused by many conditions. It's often difficult to determine the exact location and cause of abdominal pain. Abdominal pain may originate from organs in the abdominal cavity, or it may be caused by structures outside the abdomen. MayoClinic.

Watching your baby suffer after a meal is a painful experience for a parent, but you are not powerless to help. There are many factors to consider when your baby starts solids; deciphering the origin of the discomfort is the first step in calming your baby's upset stomach.

Watery stool, more often called diarrhea, is a common problem that most individuals develop at one point or another.

If you or your children have ever had an upset stomach or diarrhea, you may have been instructed to follow a low fiber diet called “BRAT”. The acronym BRAT stands for banana, rice, applesauce and toast.

Diarrhea and stomach pain are often present together in children, especially when the diarrhea is caused by bacteria or a virus. The website Keep Kids Healthy says that most cases of diarrhea resolve on their own, and a parent can make the child comfortable at home while she's sick.

Stomach discomfort after eating takes the pleasure away from a normally enjoyable experience. Your symptoms may be an indication of disease or a temporary inability to digest certain ingredients.

Gastroesophageal reflux is common in infants. According to the National Digestive Diseases Information Clearinghouse, more than half of all infants have reflux in the first three months of life but outgrow it by the time they are 1 to 2 years of age.

Pepsin is an enzyme -- specifically, it's a proteolytic enzyme, meaning it helps digest proteins. Cells in the stomach secrete pepsin to help you digest the protein that you consume in food.

The human digestive tract relies upon many different chemicals -- and in some cases, organisms -- to function normally. Probiotics are organisms, many of them native to the human intestine, that help your digestive tract function.

Gas, bloating and burping are a normal, albeit displeasing and sometimes embarrassing part of the digestion process. Gas or flatulence is such a natural occurrence that most people experience it more than a dozen times a day.