Saliva is a clear liquid produced by the salivary glands in the mouth. It plays a crucial role in digestion by helping to break down food and making it easier to swallow. Saliva contains enzymes, such as amylase, which begin the process of breaking down carbohydrates. It also helps keep the mouth moist and protects teeth from decay by neutralizing acids. In addition to aiding digestion, saliva has antibacterial properties that help maintain oral health. It contains proteins and antibodies that fight off harmful bacteria and viruses. The production of saliva is stimulated by the sight, smell, or taste of food, making it an essential part of the eating process.