It's plenty appropriate if you are going to be making claims like the 1 below, but you didn't have to make a new thread.

Cannabis resticts the oxygen going to the brain this is why we slow down

The study mentioned in that article was dealing with smoked cannabis (in huge amounts) and it didn't say anthing about cannabis making us slow down. Though I'm not denying that it can make us slow down, I just think that lack of oxygen isn't the primary cause, or if it is, it's probably because smoking cannabis produces extra toxins that aren't there if you choose some other way to consume it, and because smoking anything restricts oxygen to the brain.

I have read of that study b4 in a different article. There were some other criticisms of the study, but i can't recall what they were. Thanks for taking the time to provide a link.