When you have all the time in the world to think, it is likely you'll question how you acquired a disease such as cancer. It can be quite a wormhole of thinking and can lead to unhelpful cognitive distortions, so instead, I shift to research.
The following information is courtesy of the City of Hope Cancer Center website:
If the human immune system is so strong and sophisticated, why do nearly two million Americans develop cancer every year?
It may not be because of immune system failures. In fact, it’s likely that your immune system may regularly fight off cancer or pre-cancer on a regular basis without you even knowing it.
"The immune system is absolutely critical in fighting cancer," Dr. Lynch says.
Also, the immune system is better designed to fight foreign cells that invade the body from the outside, such as bacterial and viral pathogens. Cancer cells are the body’s own cells that have gone rogue, and the immune system may not always see them as a threat.
When cancer cells thrive, it’s often because they:
- Evade or hide from immune cells using signals that healthy cells may use
- Shut down immune cells and sometime use them to proliferate
- Overwhelm or exhaust the immune system with sheer numbers and rapid growth
A fine balance exists between the burden of cell mutation and how well the immune system may fight it off. The tipping point at which cancer begins to overwhelm the immune system is not always known.