High-speed radiation might work because it briefly turns your healthy tissue into a weird, exotic "liquid" state.
arXiv · March 18, 2026 · 2603.15913
The Takeaway
A mysterious medical treatment called 'FLASH' kills tumors while sparing healthy tissue, and physicists think they finally know why. They propose that healthy tissue is ordered enough to briefly turn into a semi-metallic liquid state under radiation, which suppresses the formation of the harmful free radicals that usually damage cells.
From the abstract
We consider physics behind the FLASH modality of cancer radiation treatment where extremely short treatment times are achieved with ultra high dose rates maintaining the conventional antitumor effectiveness and yet substantially reducing damage to normal tissues (sparing effect). The difference in responses between normal and tumor tissues is attributed here to different recombination rates related to their structure morphologies: ordered in normal vs disordered in the tumor tissues. Correspondi