Bloating, diarrhea and stomach pain from eating Greek yogurt may be a sign of lactose intolerance. Most cultured dairy products such as Greek yogurt have significantly less lactose, a sugar found in milk, than other dairy products do.

Exercise is good for your muscles, inside and out. The digestive system includes multiple organs that connect in a long, winding path from your mouth to your anus, breaking down food and extracting nutrients along the way.

Belching is a normal bodily function that occurs when too much air builds up in your stomach and needs to escape. It's commonly caused by swallowing air as you eat, but it's completely harmless. It can, however, be uncomfortable and annoying, so learning how to reduce how much air you swallow can help.

When food enters your digestive tract, it is converted into an absorbable nutrient. Some parts of popcorn are more easily absorbed than others. Popcorn is considered a whole-grain food source, meaning it contains the entire grain kernel.

Lactaid milk contains enzymes that break down lactose, the sugar in milk that breaks down into two other sugars, glucose and galactose. People with lactose intolerance don’t produce enough lactase enzymes, which break down lactose in simple sugars so it can be digested and used in the body.

The acid/base balance is expressed in terms of pH. An acidic environment has a pH of less than 7.4, whereas a basic or alkaline setting has a pH of greater than 7.4. Molecules that give off hydrogen maintain an acidic pH. In contrast, alkaline molecules attract hydrogen.

During pregnancy, women often notice a variety of digestive sensations and discomforts. Because pregnancy changes the rate at which your digestive tract processes food, you may experience symptoms that lead you to believe you've become lactose-intolerant.

Lactose, commonly called milk sugar, is the primary sugar in dairy products such as milk, cheese and yogurt. It makes dairy products taste mildly sweet and is a significant source of calories. Lactose is readily metabolized into simpler sugars and absorbed in your intestines if you produce enough enzymes.

Food provides you with nutrients and vitamins that energize your body to get through your day. Unfortunately, some people find that they feel tired after eating a meal. This can be a sign of a medical condition or food allergy -- see your doctor if you experience fatigue after you eat.

The human body encounters both good and bad bacteria daily. To microorganisms, the human body represents an attractive environment and source of nutrients. Bacteria that we call "good" helps us digest our food and protects us from bad bacteria that can make us sick or even kill us.

The duodenum is a portion of the small intestine and is responsible for absorbing nutrients from partially digested food and passing along the remainder to the rest of the intestinal system.

The process of digestion is carried out through a number of organs in your digestive tract. The first stop is your stomach, which normally propels food into the small intestine to be digested. Sometimes your digestion will slow drastically or stop with food still left, undigested, in your stomach.