Someone, somewhere needs to get their math straight.

1 in 8 returning soldiers suffers from PTSD - from MSNBC

1 in 6 Iraq Veterans Is Found to Suffer Stress-Related Disorder - from the NY Times

The Financial Times of London then ups the ante - One in five US soldiers returning from Iraq suffers serious mental health problems associated with post-traumatic stress disorder, according to research by the US Army.

I'm on vacation, so I'm too lazy to read through the details or link to the source document. By the way, what are the other 80% plus doing so that they're not stressed after being in a war zone? I want to know their secrets.