Many people would say that they start digesting their food after it is swallowed, but the crucial first step of the digestion process begins in the mouth as you chew. Chewing signals the salivary glands to start producing saliva and informs the body that it will be receiving food, and allows it more time to prepare for digestion. The more you chew, the more saliva is mixed in with your food before it is swallowed, and this is very beneficial.
Despite the fact that human saliva consists of 98% water, it is extremely potent and contains important enzymes, as well as other substances such as compounds with antibacterial properties, mucus,and electrolytes. The salivary enzymes begin the process of breaking the food down chemically while the teeth work to reduce the size of the pieces of food that the digestive system will soon have to deal with. These enzymes break down carbohydrates and starches into simple sugars, and the longer you chew, the less the rest of your system will have to work on breaking down these substances.