In its natural state, the body is slightly alkaline. By the time we reach the age of 30, the acid/alkaline scale of most Americans has tipped in favor of acidity. This is caused by numerous factors from the typical American diet (which is often quite acidic) unavoidable environmental toxins and stress.

The brain and body of humans are very sensitive to even tiniest change in the pH level of vital fluids of your body. The pH less than 7.0 is known as acidic, while more than 7.0 is known as alkaline. Human body tries to sustain many pH levels in a number of body systems.

Dr. Arthur Guyton writes in the Textbook of Medical Physiology that the first and foremost step towards maintaining health is to alkalize the body because the cells of a fit body are alkaline and the cells of a weak body are acidic. As it is known that human bodies are unable to manufacture alkalinity, thus you have to provide the alkalinity from an outside source to keep the body away from becoming acidic and dying.