I've learned to be skeptical of such studies.
Skepticism is a basic tenant of science and it is what drives us to further research into results that are surprising/unexpected.
Or is it because there is only so much talking about a new video game a human being can take?!
LOL Oh god yes. :D
Anyway, I feel much better knowing that having only two children puts me in the lowest risk of cardiovascular events group.
That seems to be a pretty strong correlation, in this study and in others.