Diet and exercise should really be taken care of by everybody. Lowers the risk of strokes and heart attacks considerably. In most of these young patients the reasons are due to other (most often undetected) issues like PFO though. That's also why i really have issues with health care in the US, as many people avoid checks to save costs. In germany, whenever you feel something is really wrong, you can just walk into ER and costs will be covered, no matter what.