Woody Harrelson gives up marijuana, says it's still 'a great drug'

Cast member Woody Harrelson poses at the premiere of "The Hunger Games: Mockingjay - Part 2" in Los Angeles, California November 16, 2015. The movie opens in the U.S. on November 20. REUTERS/Mario Anzuoni - RTS7H8K

Woody Harrelson has quit his marijuana habit after three decades of what he calls partying too hard.

The actor is one of Hollywood's most well-known marijuana enthusiasts. Harrelson told Vulture that he hasn't smoked pot in nearly a year.

He cited "30 solid years" of partying for his decision to quit. He also said he felt like the drug was "keeping me from being emotionally available." Still, he had nothing bad to say about marijuana, which he called "a great drug."

The 55-year-old said he still drinks alcohol in moderation.

Harrelson was arrested in 1996 for planting hemp seeds in Kentucky in order to challenge a state law. Hemp is a relative of marijuana, but has a lower concentration of THC, the substance that makes pot smokers high.

The Associated Press contributed to this report.