SIDS prevention...so I was wrong.

[mycrofft]

http://en.wikipedia.org/wiki/Back_to_Sleep
Please read this article. Sleeping on the back cuts SIDS in half? Crikey, thyrotomy!A wonder mine aren't dead.
Oh, but go on to read about plagiocephaly.:sad:

 

[LucidResq]

I'm surprised you haven't heard of this. It's been around for a long time, and has been pretty well-marketed.

Plagiocephaly can be prevented by allowing your infant plenty of belly time while awake and not just keeping your baby confined to a crib or carrier. Back is best for baby's sleep... not 24/7.

 

[mycrofft]

My kids were tummy sleepers.

At least until those cute gill covers grew shut in the back.
I remember hearing about honey, second hand cigarette smoke, prenatal drug use, genetic predispositions to cardiac and respiratory trouble, etc.