Water treated with an ionizer is known as alkaline water, meaning that it has a pH of 8 or more. Alkaline water is able to send electrons to active oxygen, which neutralizes the oxygen and prevents oxidation. Many scientists believe that there are substances called antioxidants that are found naturally in food that can also prevent the oxidation process. The research on the connection between diet and disease is not complete, but many scientist theorize that oxidation is responsible for much of the aging and disease that is present today. Although natural antioxidants are important to a healthy diet, alkaline water is the best source of electrons to stop oxidation and neutralize free radicals. When alkaline water donates electrons to free radicals, those free radicals cannot damage cells. Alkaline water is a convenient and completely safe source of electrons to stop the oxidation process. Many people believe that alkaline water is actually a superior source of electrons because it has a low molecular weight that allows it to travel to all tissues within the body very quickly.