The Mamma Mia! star does not smoke weed herself because she suffers from anxiety attacks, but she sees nothing wrong with responsible dope-smoking and is adamant it should be made legal around the world.

Asked if she uses the drug, Seyfried tells The Sunday Times Style magazine, "No, because I suffer from anxiety attacks, and you can't mix the two, so it's the worst thing ever. But I think it's a wonderful thing, and lots of people use it responsibly, and it should be legal. I don't understand how people can die all the time from alcohol poisoning, yet pot is so stigmatised."