Other RCTs included participants who were occasional cannabis where users averaging 5 cannabis intake per month (Mason et al. 2019). Also, one RCT required participants to have at least one cannabis exposure, although it was undefined, (Bloomfield et al. 2021) while another RCT did not exclude participants with previous cannabis exposure (O’Neill et al. 2021). The study only included Canadian adults ages 45 and older who had no prior dementia diagnosis. It’s garnered a lot of respect in medical circles because of its size \u2013 more than 6 million people’s health data was included, making the results more reliable than past, smaller marijuana studies. Unfortunately, you may not be able to tell the difference between natural and synthetic marijuana.<\/p>\n