[mcoliver]

Not a doctor, but reading this https://www.cnn.com/2026/05/22/sport/kyle-busch-death

“I’ve got an individual that’s (experiencing) shortness of breath, very hot, thinks he’s going to pass out and producing a little bit of blood – coughing up some blood,”

and then seeing that he was hiking in the Sierra in California 5 days earlier https://x.com/KyleBusch/status/2055384870638309742 leads me to believe he developed blood clots and had a massive Pulmonary Edema that killed him.

PE's are no joke and can happen to young and fit people at times seemingly at random. Clotting can be triggered by genetic causes, dehydration, and long flights/drives without moving your legs but sometimes they just happen.

If your body doesn't absorb them they can tear off and go to your lungs or heart resulting in shortness of breath and coughing up blood. 20% of PE's kill people instantly with no warning which was shocking to learn about.

Wear your compression socks on long flights and get up and stretch your legs. Same for sitting at on office or going on long drives. And if your legs every feel heavy, hot, or sweaty for apparently no reason go directly to the ER. A d-dimer test and subsequently an ultrasound will confirm. The fix? blood thinners and monitoring until your body takes care of them.