![text reads: "Recreational cannabis use before the age of 18 (but not in adulthood) or heavy use at any age has been linked to grey matter atrophy in the adult temporal pole, parahippocampal gyrus, and insula [64]. Longitudinal data have indicated that self-reported persistent cannabis use between 13 and 15 years is associated with a significant decline in IQ [65]. The longer the period of cannabis consumption, the greater the decline in IQ [65]. This decline in IQ was found to be more pronounced in participants who used cannabis before the age of 18 as compared with those who started to use cannabis after 18. These findings suggest that the developing brain of adolescents might be particularly sensitive to the adverse consequences of cannabis use." source: Fuhrmann, D., Knoll, L. J., & Blakemore, S.-J. (2015). Adolescence as a Sensitive Period of Brain Development. Trends in Cognitive Sciences, 19(10), 558–566. https://doi.org/10.1016/j.tics.2015.07.008](https://pbs.twimg.com/media/HWL661qW8AABTbH.jpg?name=small&format=webp)
ALT text reads: "Recreational cannabis use before the age of 18 (but not in adulthood) or heavy use at any age has been linked to grey matter atrophy in the adult temporal pole, parahippocampal gyrus, and insula [64]. Longitudinal data have indicated that self-reported persistent cannabis use between 13 and 15 years is associated with a significant decline in IQ [65]. The longer the period of cannabis consumption, the greater the decline in IQ [65]. This decline in IQ was found to be more pronounced in participants who used cannabis before the age of 18 as compared with those who started to use cannabis after 18. These findings suggest that the developing brain of adolescents might be particularly sensitive to the adverse consequences of cannabis use." source: Fuhrmann, D., Knoll, L. J., & Blakemore, S.-J. (2015). Adolescence as a Sensitive Period of Brain Development. Trends in Cognitive Sciences, 19(10), 558–566. https://doi.org/10.1016/j.tics.2015.07.008








































