1.   And yet, despite its safety and mildness relative to other recreational drugs, caffeine still unquestionably alters brain function.

2.   In fact, caffeine is arguably the safest recreational drug.

3.   In many ways, caffeine is in a different league from other recreational drugs.

4.   In the concluding chapter, Jonnes takes issue with those who favor Decriminalization or legalization of recreational drugs.

5.   The only other recreational drug used in this way is nicotine, which is also seldom used for outright intoxication.

6.   Marijuana is a recreational drug.

7.   The project will look at recreational drug use and examine the implications for agencies working with young people.

8.   And check them both for performance-enhancers and recreational drugs.

9.   And their counterparts in other cities echo their growing concern about the connections between HIV infection and the use of recreational drugs.