Salmonella infection, one of the most common kinds of food poisoning, is caused by ingesting Salmonella bacteria, often from foods such as raw or undercooked meat or poultry. The symptoms of Salmonella infection include abdominal pain and cramps, muscle pain, chills, fever, nausea and vomiting.

GERD, or gastroesophageal reflux disease, is a chronic condition with symptoms like acid reflux and heartburn. It occurs when stomach contents make their way back up the esophagus and into the throat or mouth area. This disease can occur in infants, children and adults.

No matter how nutritious, your favorite foods won't do you any good in their natural, whole state. The nutrients your body gets from food must be small enough to absorb easily into your bloodstream.

The pancreas, a small organ located behind your stomach, produces digestive enzymes that flow through the pancreatic ducts to the small intestine, where they help break down food particles into usable nutrients.

Your pancreas secretes enzymes into the small intestines to help you digest food, it also secretes the hormones insulin and glucagon into your bloodstream to help you regulate blood sugar. Chronic pancreatitis is a prolonged inflammation of the pancreas.

A painful, burning sensation in your chest, right behind the breastbone, could be heartburn, which is caused by a backup of your stomach contents into the food tube, or esophagus. Many people experience heartburn from time to time -- but if this occurs frequently, you may have gastroesophageal reflux disease.

If you’ve been told that acidic foods, including soda pop, could cause stomach ulcers, you’ve been told a lie. For a while, even the medical community believed that eating highly acidic foods, stress and spicy food could cause stomach ulcers.

Bloating is the feeling that your abdominal region is tight or distended. A common feeling after eating too much or eating foods that are hard to digest, it can also be caused by an allergic reaction to peanuts -- one of the most common food allergies.

Popcorn is a healthy snack, because it provides few calories but a significant amount of fiber, which aids digestion.

Leaky gut syndrome, also known as intestinal permeability, occurs when substances, such as partially digested food particles, toxins and bacteria, leak through the intestinal wall into the bloodstream. Dietary changes are among the treatment options recommended to heal the damaged intestines.

A hernia is caused by part an internal organ pushing through a weak area of muscle. Inguinal, or groin, hernias are the most common, according to MedlinePlus, but hernias can also occur in the abdominal wall.

The sigmoid colon is the terminal section of your large intestines that attaches to the rectum and anus -- a sigmoid colectomy is a surgical procedure in which the sigmoid colon is resected.