Puetas death is extremely tragic indeed.
I feel for Sevilla and it's fans.
He was on his way to be a great player.

The incident has nothing to do with drugs at all, he had a heart-failure that due to his extreme physical condition, was very hard to find.
This is a huge problem in many sports that require you to have a great physics. Remember a few years back when ppl doing orientating (running through a forest with a map, findging stations) were dropping like flies due to heart failures.

Drugs are used though, Italy had some big scandals, and so did the dutch leagues. England has been quite clear on it's stance, but yes, soccer is not free from it. Far from.