Oxygen providies life and energy to every cell. When there is insufficient oxygen to support a healthy cell, the cell turns to another source of energy. It upsets the metabolism and causes the manufacture of improper chemicals. Soon the cells become unhealthy and lose their natural immunity. They are open to invasion by viruses, bacteria and various other health problems such as cancers, seizures, nerve deterioration, and many more. Oxygen isnot only a life giver itis also a killer of harmful anaerobic infectious bacteria. These bacteria cannot grow or survive where there are high levels of oxygen. Oxygen kills the harmful bacteria without destroying the aerobic or beneficial bacteria, which are essential for good health.Our modern sedentary life-styles prevent most ofus from processing enough oxygen, resulting in a bloodstream depleted of oxygen. Poor eating and drinking habits, air pollution and lack of exercise deprive the cells of oxygen and weaken the immune system. Hypoxia (lack of oxygen in tissues) can lead to a number of degenerative illnesses, such as circulatory problems, digestive disorders etc.