how does a normal cell turn into cancer

how does a normal cell turn into cancer? All types of cancer develop from our cells, the body's basic living unit. To understand cancer, it is useful to know how normal cells turn into cancer. The healthy cells in our bodies have the ability to divide. However, muscle and nerve cells do not have this feature. They use these abilities to regenerate dead cells and repair injured tissues. In the first years of life, cells divide faster, but at an adult age, this rate slows down. But these capabilities of cells are limited, they cannot be divided infinitely. Throughout its life, every cell has a certain number of divisibility. A healthy knows how much to divide and knows to die when necessary. This is called apoptosis, the programmed death of the cell. Normally, the body needs to grow, divide and produce more cells for healthy and proper functioning. Sometimes, however, the process deviates from the correct path, and cells continue to divide without the need for new cells. Unconscious cancer cells begin to divide and multiply uncontrollably. Masses of excess cells form a size or tumor. At the center of the cells are microscopic strands, called DNA, which can also be visualized by electron microscopy, where the genetic information of the cell and organism is stored within the nucleus. DNA is necessary for the cell to function normally. Cancer cells are caused by damage to this DNA strand. Even if there is DNA damage in the cell's normal life cycle, the cell either repairs it or dies. Damaged DNA in cancer cells cannot be repaired and uncontrolled proliferation begins. DNA environmental factors (chemicals, viruses, smoke)