By Chris D. Meletis, N.D.

Understanding the role of pH in human health and how minerals can help.

The human body contains a massive amount of ongoing chemical reactions. The majority of these processes occur within our cells—the smallest building blocks of our bodies. Like a factory, the body produces wastes that can be quite toxic to the body if not disposed of properly. A large percentage of waste produced by our cells finds its way into the bloodstream. These wastes can alter the environment of the blood in a negative way if they are not rapidly metabolized. One of the major cellular waste products is hydrogen ions. These ions are responsible for changing the environment of the blood, mainly by making the blood more or less acidic, which can be very detrimental to the functioning of other bodily processes.

In the science of chemistry, the degrees of acidity or alkalinity of a substance are expressed in pH values. The pH system, or potential of hydrogen, is measured on a scale from 0 to 14. The point at which a substance is neither acidic nor alkaline is measured at point 7. Increasing acidity is displayed as any number less than 7, while increasing alkalinity is expressed as any number above 7. Thus, maximum acidity is measured at 0, while maximum alkalinity is measured at 14. Additionally, each unit on the scale is logarithmically derived, meaning that there is a factor of ten between each digit. So,a pH of 2 is ten times more acidic than a pH of 3,and a pH of 1is100 times more acidic than a pH of 3.

The pH of blood is closely maintained between 7.45 and 7.35. More specifically, the blood within the arterial system stays near 7.45, while the blood within the veins stays near 7.35. Venous blood is more acidic due to the large amounts of hydrogen ions indirectly produced from carbon dioxide released from the tissues. It is noteworthy to point out that the chemically neutral mark for blood is a pH of 7.4, which is slightly more alkaline than the standard neutral point of 7.0. Death may rapidly occur if the blood pH falls outside the range of 6.8 to 8.0 for more than a few seconds, as a blood pH outside of this range is incompatible with life. This fact greatly relays the importance of careful regulation of hydrogen ion concentration in the body.

Regulation of pH is also referred to as acid-base balance. The body is constantly working to maintain a balance between too many acid products and too many alkaline, or basic products. Normally, the body is able to maintain an acid-base balance with little difficulty. The lungs and the kidneys are the

primary organs by which the body regulates its supply of acids and bases. It is when we do not have enough raw materials for the body to accomplish its task that we run into problems with acid-base balance.

Even small changes in acid-base balance can have dramatic effects on the normal function of cells within our bodies. For instance, one of the main manifestations of acidosis is a depressive effect on the central nervous system. This may be experienced as disorientation and, in more severe episodes, as coma. Conversely, a person who tends to have more alkaline blood will experience overexciteability of the nervous system, such as nervousness, tingling, spasms, and twitches of the muscles. Excessive alkalinity that is not promptly addressed can lead to violent muscle spasms and convulsions.

 

Even small changes in acid-base balance can have dramatic effects on the normal function of cells within our bodies.

The most important nutrients in our bodies for maintaining acid-base balance are certain minerals. More specifically, sodium, potassium, chloride, and bicarbonate (a combination of hydrogen, carbon, and oxygen molecules) are responsible for the precise balance involved. Physicians routinely analyze the proportions of these elements in order to determine one’s relative acid-base concentrations. By fine-tuning the relative amounts of these elements in the blood, many practitioners of natural medicine can work to improve their patient’s overall balance with the environment. The amounts of sodium, potassium, chloride and bicarbonate can be mathematically compared to arrive at a general consensus in regard to how well the body is dealing with its production of hydrogen, a waste product.

As stated earlier, a buildup of hydrogen can lead to imbalances in the acid-base ratio. If the physician finds an unusual ratio between those different elements, he/she may suspect an irregularity in the production and clearance of hydrogen in the patient. Natural medicine practitioners will then design and implement a treatment geared toward correcting this imbalance, by intervening with strategic use of absorbable minerals and trace minerals to reestablish a healthful balance.

Summary

Analyzing acid-base balance and the concentrations of minerals in the blood provides yet another way for the practitioner of natural medicine to address the ability of the body to maintain homeostasis, or balance. By supplying the body with enough of the smaller, lesser-known substances found in nature, physicians can steer how the body reacts to its own internal production of wastes and to external influences on its health. Additionally, by preventing excessive fluctuations in acid-base balance, the body may be more apt to heal itself from chronic forms of illness. Thus, in summary, maintaining the complex functioning of the body’s tightly regulated pH system requires maintaining proper mineral and trace mineral levels to sustain optimal and healthful balance.

References:

1. Sherwood. L. Human Physiology From Cells to Systems, 3rd Edition. 1997.
2. J Hooper, WJ Marshall, AL Miller. Log-jam in acid-base education and investigation: why make it so difficult? Annals of Clinical Biochemistry 1998 35: 85-93.
3. Schlichtig R, Grogono AW, Severinghaus JW: Current status of acid-base quantitation in Physiology and Medicine. Anesthesiology Clinics of North America, March.16: 211-233. 1998.
4. Schlichtig R, Grogono AW, Severinghaus JW: Human PaCO2 and Standard Base Excess Compensation for Acid-Base Imbalance. Critical Care Medicine. 26:1173-1179. 1998.
5. Grogono AW, Byles PH, Hawke W: An in-vivo representation of acid-base balance. Lancet, ii: 499, 1976.