UK expert disagrees —- marijuana does less damage to the user, and much less to friends and family, than alcohol does: https://www.bbc.com/news/uk-11660210
> Prof Nutt told the BBC: "Overall, alcohol is the most harmful drug because it's so widely used.
Another way to measure is the therapuetic index. It's the ratio of the lethal dose divided by the effective dose. It's about 10 for ethanol and 30,000 for cannabis. Larger is safer.
This means drinking ~10 times as much as your usual amount of alcohol has a 50% chance of killing you. For cannabis you would need to consume ~30,000 times as much (which is probably not even physically possible).
That’s a pretty pointless indicator. By that measure marijuana is better for you than water.
I have read of people dying from consuming too much water.
I have not read that of cannabis.