How many people died last year from the use of marijuana?

They were 18-20 years old when asked about marijuana use.

And it's not just marijuana use, which has increased by 141 percent.

Changing federal law to allow for the use of medical marijuana.

Some students are hit harder by the use of marijuana than others.

For example, some states now have made the use of marijuana legal under state law in various situations.

Consider what has just happened on the issue of marijuana use for medical purposes.

Fully 62 percent of the need for treatment is due to marijuana use.

He expressed particular concern about the daily use of marijuana.

He added that the inquiry had also found no evidence of marijuana use.