- Reaction score
- 520
Cystic fibroris just like cancer is a genetic mutation that almost never occurred to prehistoric men. It's not beneficial to the body and that's why inflammation is triggered. The same applies to baldness, baldness was probably a genetic mutation that has spread so much because it wasn't damaging enough to the body to be excluded by natural selection. But the body has still to be alerted about hairs being damaged, that's why inflammation is triggered.The body has evolved responses to damage yes. But they're by no means perfect, just enough for the species to survive in its situation. If there's fibrosis and calcification, it's due to the relevant pathways being triggered somehow and nothing more.
Why would the body not be alerted about a genetic predisposition? That's a ridiculous line of thought. If someone has cystic fibrosis - which is 100% genetically determined by a single gene - by your logic the body wouldn't cough up the extra mucous that's produced.