Chemotherapy is the treatment of cancer through the application of cancer-destroying drugs.
As part of the body’s natural process, cells are constantly replaced through a process of dividing and growing.
When cancer occurs, cells reproduce in an uncontrolled manner.
More and more cells are produced, and they start to occupy an increasing amount of space until they occupy the space previously inhabited by useful cells.
Chemotherapy drugs interfere with a cancer cell’s ability to divide and reproduce.
A single drug or a combination of drugs is used.
These can be delivered either directly into the bloodstream, to attack cancer cells throughout the body, or they can be targeted to specific cancer sites.
The effectiveness of stopping blood flow and oxygen to the tumor has been questioned in recent years.
Instead of starving the cells, studies have suggested that stopping the blood flow may enhance the cells’ ability to resist treatment and cause metastasis.
Further investigations have led scientists to suggests that the same principle may still be useful.
They say it could be effective in preventing the cancer cells from resisting treatment by targeting the proteins that are deployed by the cancer to increase resistance and drive metastasis.