We have a brand new term to add to our ever growing list of "probably nothing" medical phenomenons.

SADS is: Sudden Adult Death Syndrome. 

So, are they talking about lightning strikes? Shark attacks? Trees falling on people??

Nope. Specifically, SADS is a giant uptick in fatal cardiac events in otherwise healthy adults under the age of 40.

Hmmmm... what does that remind you of? And why would it be a recent phenomenon?

Science may never know...