| Popis: |
Cancer is a disease caused by defective cells that have an uncontrollable ability to proliferate without regard for the physiological organ. Cancer is a complicated multi-factorial, multi-staged, and multi-mechanistic disease. Within the initiation and course of manifestation, it comprises the interaction of environmental and host elements. Inherited genetic dispositions have a significant role in 5-10% of breast cancer cases and 5- 13% of colon cancer cases. Viral infections cause about 7% of cancer fatalities in developed countries; 4% are due to occupational hazards; 2% are due to sunlight; 2% are due to pollution of air, water, and soil; and less than 1% are due to food components and business products. |
