You’re really not telling the story correctly based on evidence you linked below, to quote: > Fig. 3 shows that, among adolescent-onset persistentcannabis user

You’re really not telling the story correctly based on evidence you linked below, to quote: > Fig. 3 shows that, among adolescent-onset persistentcannabis users, within-person IQ decline was apparent regardlessof whether cannabis was used infrequently (median use = 14 d)or frequently (median use = 365 d) in the year before testing. Incontrast, within-person IQ decline was not apparent amongadult-onset persistent cannabis users who used cannabis in-frequently (median use = 6 d) or frequently (median use = 365 d)in the year before testing. So more specifically smoking weed while your brain is developing seems to be correlated to a decline in IQ later in life. While those who start smoking, even copious amounts, as adults don’t have a permanent decline. I am cannot find reference to support your claim that people are consuming it younger than before. If you’re going to cite studies, you could at least represent the findings honestly. Also, it’s pretty apparent you’re trying to sell a narrative to others to induce fear of marijuana… this is a post about lead poisoning after all. Quite the leap, IMHO, to compare it marijuana use… The paper you linked below and incorrectly summarized for anyone curious: https://www.pnas.org/doi/abs/10.1073/pnas.1206820109 https://www.pnas.org/doi/abs/10.1073/pnas.1206820109