After lungs and heart the digestive system plays a vital role in our body. The digestive system is made up of the gastrointestinal tract—also called the digestive tract or GI tract. The main organs that make up the digestive system are the mouth, esophagus, stomach, small intestine, large intestine, rectum and anus. Helping them along the way are the pancreas, gallbladder and liver.

The digestive system breaks down the foods we eat into energy our bodies can use. Stomach is a muscular organ found in the GI tract. The stomach muscles contract periodically churning food to enhance digestion with the help of acid and enzymes it produces. Motility, digestion, absorption and secretion are the four vital functions of the digestive system as described by WebMD and other medical sites

 Gas, bloating, heartburn, acid reflux, are some of the discomforts we get due to negative emotions. 

The negative emotions which give this system its psychosomatic illness are jealousy and comparison.