Most of the medical community view cancer as a local, specific disease. However, because of a paradigm shift (brought on by impinging views from the holistic medical community), many now feel that cancer is not the disease, but rather it is only a symptom of a disease; an outrageous symptom but more or less a result of a breakdown in our defense.
It has only been in the last two to three decades that research into the workings of the immune system has really taken off. Before this, the immune system was not completely ignored by the established medical community; it was used as an indicator of one’s health status. Remember your "white count" tests? A high white blood cell count told the physician that your body was fighting an infection. Beyond that, it pretty much was not only ignored, but abused, especially considering the innumerable medical procedures and drug therapies that suppress the immune system—some procedures actually decimating it.
One of the reasons it has taken science so long to get a grip on the immune system is that its parts and interconnectedness are not readily perceivable. We have the digestive system, the circulatory system, the nervous system, and the respiratory system to name a few systems. These systems are easily described because they are physically connected. The immune system, on the other hand, consists of, ostensibly, unrelated parts and pieces, and much of what connects it together is molecular.
The immune system is action and reaction. It has an intelligence of its own, though primitive, working like a mouse in a Skinner Box: the product of stimulus and response. For example, if a microscopic piece of an organ gets into the blood stream either through disease or by injury, the immune system will respond to it as if it were a foreign body, and having done so, the immune system is now trained to attack the original organ. The suppressor T-cells have to stop this attack or we have the beginning of an autoimmune response (lupus is an autoimmune disease in which the immune system actually attacks the person’s own body).
When referring to the immune system’s physical parts, we also call it the lymphatic system, though the entire immune system, on a molecular level, goes much farther, for even the tiniest cell in our bodies can create chemicals to aid in the defense of the entire system. The lymphatic system consists of two parts, the primary and secondary organs
We have to stop here to take a look at NK Cell Activity, for it is the primary criteria determining the overall strength and health of your immune system. NK cells are not, like white cell, measured by their number, for their number stays constant, approximately 15% of your white blood cells. NK cells provide the first line of defense in dealing with any invasion to your body. Each NK cell contains several small granules that act like explosive charges: when a cancer cell is recognized, the NK cell attaches itself to the cancer cell and injects these granules into the cancer cell and they explode, destroying the cancer cell within five minutes. The NK cell then moves on to another invader. Healthy NK cells have been know to attack two or more invaders or infected cells at once.
It is now accepted that that individuals with low NK cell activity are more susceptible to Chronic Fatigue, autoimmune diseases, cancerous tumors and viral infections.