The drug should not be used more than three times a week.

A year after the study began, students were asked whether they had used drugs in the last month.

"Very few people who are over age 21 will start using drugs if they haven't used them before."

If people want to stop using drugs, they help them.

And you do see people using drugs in the show.

If parents want to know whether their children are using drugs, why not ask them?

On one hand, we tell kids not to use drugs.

Want to know how many people use drugs in your country?

After the death of his father, he was able to stop using drugs.

Anyone else would use the drug if they had the opportunity.