What is digestion? Digestion is a biological process in which food is broken down and transformed into assimilable nutrients which then pass through the intestinal wall to enter the bloodstream. Digestion begins in the mouth, where food is crushed and mixed with saliva, then continues in the stomach, which secretes acidic digestive juices, continuing to break down and crush food for a few hours. As it leaves the stomach, pre-digested foods (called chyme) continue to be broken down in the intestine by digestive juices from the pancreas and gallbladder. Nutrients pass through the wall of the intestine and travel through the blood to be used by the body. What has not been absorbed, added to the dead cells in the intestinal wall becomes the fecal matter in the colon.

Functional digestive disorders are disorders for which there is no known lesion, but troublesome functioning of the digestive system. There are several types.

digestive disorders of the stomach (loss of appetite, nausea, heartburn, belching, bloating), which is often called dyspepsia, and digestive disorders of the intestine (bloating, intestinal gas, etc.) which are frequent problems.

Dyspepsia, this feeling of heaviness, "overflow" or bloating accompanied by belching), or pain above the umbilicus that occurs during or after meals, is found in 25% to 40% adults. As for the intestinal gases emitted in the form of winds (farts), we can rest assured, they occur in almost everyone, 6 to 20 times a day vary from 300 ml to 1 liter / d.