Your cancer your life - uncontrolled growth (general information)


        YOUR CANCER YOUR LIFE - UNCONTROLLED GROWTH (GENERAL INFORMATION)
One popular theory on the origin of cancer states that, throughout life, cancer cells continually develop in our body by a process of mutation. Mutation means a spontaneous change in the basic genetic makeup of a cell so that it is distinctly different from its parent cell. In all of us, mutations occur continually and most are harmless, but occasionally a mutation gives a cell the qualities which make it into a cancer cell — failure to differentiate, escape from growth regulation, ability to metastasize and ability to invade normal tissues. Because the change is in the cancerous cell's genetic makeup, it can pass it on to all cells which develop from it. Usually, the immune system detects new cancer cells very quickly and destroys them before they have a chance to multiply. Unfortunately, with most cancers, the immune system is only capable of dealing with a very few cells. Thus, if for some reason the cancer manages to grow to more than a few thousand cells (smaller than a pinhead), it is then beyond the control of the immune system. However, if some form of treatment destroys most of the cells, the immune system can again come in useful in getting rid of any odd ones which remain.
Many attempts have been made to artificially stimulate the body's natural immune system to deal with large numbers of cancer cells. On the whole, the results have been very disappointing.
This means that once a cancer has reached a size where it can be detected (millions of cells), it is growing independently, regardless of the body's immune system and normal controls on growth.
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Cancer
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