I am not saying you shouldnt carry your baby in a carrier, but it seems to me that they do cause a huge strain on your body. (And if Motrin was doing this just to make money, you'd think they would be advocating babywearing.)
Do they not cause back problems? Biologically I don't see how it wouldn't cause issues.
It strikes me as odd that motrin even has a position on this topic.
My carriers hurt my back like heck though! Maybe its just me.
Maybe it does for alot of people. My Maya sling just about kills me when I wear it. I thought maybe I've been wearing it wrong, but I wear it exactly like it says to in the insructional video and still I end up having to take it off after about an hour or so of striaght wearing it. At the end of a whole day wearing it, it makes me want to take a whole bottle of pain killers.