Actor and hemp advocate Woody Harrelson has been a vegan for almost 25 years, but it was vanity that got him started down the path, not animal rights.
Harrelson tell Maxim magazine, "It's been at least 20 years. I used to eat burgers and steak, and I would just be knocked out afterward; I had to give it up.
"The first thing was dairy. I was about 24 years old and I had tons of acne and mucus. I met some random girl on a bus who told me to quit dairy and all those symptoms would go away three days later. By God she was right."
Harrelson can next be seen on the big screen in "Zombieland," which opens October 9. The trailer is below.Watch: