I don't know how biased that study is. You're assuming it's biased, but unless you got an advance copy of the Journal of Clinical Investigation, how would you know? You know what they say about assuming. It *sounds* legitimate to me, and it's peer-reviewed - and most scientists don't submit stuff for peer-review if they think it will tarnish their reputation by showing they do bad science, as that can come back to haunt them and cost them their jobs or even their entire careers.

I have short-term memory loss when I'm stoned. I attribute that to the fact that I'm intoxicated and not paying as much attention to things like I would if I weren't. And when I'm not stoned, I have no problem with memory loss at all, other than the minor age-related losses everyone endures as they get older.