I've heard so much bullshit shit. No, it doesn't poison your brain, if it did, I'd be a walking vegetable by now.

I had one arguement with one person once, and they kept saying cannabis kills, I say, give me an example then. They told me they knew someone, who smoked pot then drove their car. They had an accident and they died in the accident...... THAT was their arguement...so fuckin lame. A made up story where the accident killed the person, not the cannabis. If the person was sober and had the accident, would you say, oh, being sober must have killed them.

Just ignore them because they will never go away.