Article content Zebrafish exposed to THC in the earliest stages of their development saw a 70 per cent dive in neural activity later in life and the decrease, at over 70 per cent, was starker when they were immersed in CBD, the University of Alberta reports. If the same thing happens with humans, the researchers suggest that the findings could have implications for prenatal development in humans, an article posted on the university’s website notes. We apologize, but this video has failed to load. Try refreshing your browser, or Alberta study shows reduced neural activity in zebrafish exposed to THC, CBD or both Back to video