Key Takeaways

There’s a new theory of how cancer kills people

The theory holds that cancer spreads into blood vessels, causing clots that lead to organ damage

Researchers will see if treatments focused on blood vessels will extend patients’ lives

WEDNESDAY, Oct. 22, 2025 (HealthDay News) — What kills cancer patients is where their malignancy spreads in their body, rather than the cancer itself, a new study says.

If tumors spread into major blood vessels, they can spark blood clotting that contributes to organ failure, researchers recently reported in the journal Nature Medicine .

That’s why some people with advanced cancer die quickly, while others survive even though cancer has spread throughout their bodies, researchers said.

“The big question we were trying to answer: What ki

See Full Page