Oncogenes
Normal (non-cancerous) cells have a regulated, well-controlled, cell division and growth, thanks to the genes that produce proteins that provide such auto-regulation and control. These are the proto-oncogenes and tumor-suppressor genes, which regulate the cell cycle and keep the cells in good control. Tumor-suppressor genes produce proteins that prevent the uncontrolled cell growth and abnormal cell division.
When the cells are constantly exposed to cancer-causing agents (either toxic substances, chemicals in food or drinks, excess sunlight, radiation, etc.), the body produces an abnormal proteins called oncogenes which cause the cells to lose their ability to control their regulation. The non-regulated cells then go wild and divide abnormally fast, uncontrolled, transforming the cells into cancer cells that lose their original characteristics and functions (like cancerous lungs tissues turning into a solid mass, losing their air-cells and ability to oxygenate blood). The uncontrolled growth and replication of the cancer cells lead to large space-occupying masses in the body, crowding out other organs and pressing on vitals blood vessels and nerves. The most adverse outcome of this malignant process is the transformation of the cancerous organ into a useless hard mass of tissues and the loss of original function of the organ, as in cancer of the lungs, liver, kidney, brain, breast, prostate, etc.
Conclusion
Normal (non-cancerous) cells have a regulated, well-controlled, cell division and growth, thanks to the genes that produce proteins that provide such auto-regulation and control. These are the proto-oncogenes and tumor-suppressor genes, which regulate the cell cycle and keep the cells in good control. Tumor-suppressor genes produce proteins that prevent the uncontrolled cell growth and abnormal cell division.
When the cells are constantly exposed to cancer-causing agents (either toxic substances, chemicals in food or drinks, excess sunlight, radiation, etc.), the body produces an abnormal proteins called oncogenes which cause the cells to lose their ability to control their regulation. The non-regulated cells then go wild and divide abnormally fast, uncontrolled, transforming the cells into cancer cells that lose their original characteristics and functions (like cancerous lungs tissues turning into a solid mass, losing their air-cells and ability to oxygenate blood). The uncontrolled growth and replication of the cancer cells lead to large space-occupying masses in the body, crowding out other organs and pressing on vitals blood vessels and nerves. The most adverse outcome of this malignant process is the transformation of the cancerous organ into a useless hard mass of tissues and the loss of original function of the organ, as in cancer of the lungs, liver, kidney, brain, breast, prostate, etc.
Conclusion
Normal, healthy, persons do not have cancer cells in their body. That includes the general population at large. Only individuals with a cancerous disease have cancers cells in them. And you can email this medical fact to your friends.
Knowing how deadly cancers can be, it behooves all of us to live a healthy lifestyle, and to be knowledgeable and keenly aware that cancer is best prevented. And if it still occurs, in spite of our diligence and discipline, it is best diagnosed early. A regular medical check-up is a prudent prophylactic health strategy in our fight against diseases, especially against cancer. –The Inquirer
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