Hello! My friend has a habit of mixing marijuana with alcohol. He says it's good. I knew it's not healthy and can cause serious health issues. I did a quick research and found this blog: https://www.ontariobusinesscentral.ca/blog/problem-with-mixing-booze-and-pot/ . It says mixing can negatively impact brain. How true is it? How serious a problem can the mixing of weed and alcohol cause? My friend is not listening to me, but I want to try and stop him doing it.