Woody Harrelson became a vegan to clear up his acne.

The No Country for Old Men actor – who hasn’t eaten meat since his 20s and now only eats raw food – says his decision to avoid meat and dairy products has nothing to do with animal rights and actually started when a stranger told him it would improve his complexion.

He told 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.”

The 48-year-old star is not the only celebrity who has credited veganism – which also prohibits the use of products made from animals, such as leather – with improving their appearance.