Although AAS may not be the true culpret of Don's death I am sure they perhaps escalated his health problems.
As for Momo I cannot say but as for Andreas, he took BBing to the extreme. This guy did not beleive in and offseason and was always in shape. It is not healthy for a body to be soo low in bodyfat for long amounts of time.IMO no one else has ever been as shredded as Andres...Just look at his tricep in the attached picture.
This will always be an ongoing battle..
Do steroids cause problems?
Let's look at 2 greats
Arnold - recently had heart complications and needed surgery
and we have Louie, competed almost as many years, may/may not have been using the same AAS as Arnold and no complications we are aware of.
or Kevin Levrone and Flex Wheeler...both in the game about the same time frame, probably used the same amount of gear. Flex has to retire due to kidney problems and Ke decides to call it quits
Maybe not great comparisons but I think you get my drift.
In my mind does AAS use/abuse directly cause Death? No! Will it advance any current problems one has, ie: hairloss, CV problems, kidney problems ......YES!