Kirk Cameron has said that being gay is destructive to society and that he would not be okay if one of his children were gay.

The 41-year-old Cameron came to prominence as a child actor, playing Mike Seaver on the ABC sitcom Growing Pains. More recently, he played Caleb Holt in the 2008 film Fireproof.

He and fellow evangelist Ray Comfort founded the ministry of The Way of the Master.

Appearing on CNN's Piers Morgan Tonight, Cameron told host Piers Morgan that as a Christian he did not approve of gay marriage.

When Morgan asked whether he would tell his children that gay marriage is a sin, Cameron answered: “I believe that marriage was defined by God a long time ago. Marriage is almost as old as dirt. And it was defined in the garden between Adam and Eve – one man, one woman for life, till death do you part. I would never attempt to redefine marriage and I don't think anyone else should either.”

“Do you think homosexuality is a sin?”

“I think it's unnatural, that it's detrimental and ultimately destructive to so many of the foundations of civilization.”

Cameron added that he would not be happy if one of his six sons announced he was gay.

“I'm going to say, 'You know there's all sorts of issues that we need to wrestle through in our life, and just because you feel one way doesn't mean we should act on everything we feel.'” (The video is embedded in the right panel of this page. Visit our video library for more videos.)