"Research out of the University of Sydney showed that if you take 5g of creatine daily, you can lift your IQ by a full 15 points over a six-week period. Said study leader Caroline Rae, "Creatine gave a significant boost to brain power." Why?

My friend has been shilling creatine to me recently telling me I need to start taking it because the only meat I eat is chicken and he told me that since I don't eat any red meat I will "gain IQ" from creatine. He said that vegans and people who don't eat red meat, such as myself, will have massive benefits.

Is he full of shit? or will creatine actually have these effects? If so, why? I always thought it was just a bodybuilding supplement, not a nootropic, I guess I just haven't really paid enough attention to nutrition or supplements in my life.