Stevie Nicks still smokes marijuana despite her past issues with drugs because it helps her write hit songs.

The Fleetwood Mac star checked into rehab in the late 1990s after becoming "the worst drug addict" in her circle of friends, but she still likes to roll a joint despite the fact that most former users steer clear of alcohol and drugs.

She tells Rolling Stone magazine, "When I'm writing, I will allow myself to smoke a little bit of pot. It's my one little thing that I can do. If I'm sitting at the piano and I'm writing, then I'm not out driving around in a car. Nobody is here, nobody sees me. I am not smoking with anybody. It's just me and it's my choice.

"I use it (marijuana) as a tool and I'm very careful... And I get results. However, if I thought it was going to lead back to something worse, I'd stop."