Gervais, 49, has lost almost two stone in weight and said his 'fat gags' are no more as it would be mean to make fun of people when he wasn't overweight himself.
According to UK newspaper Daily Express, he said: 'When I was fat myself it was allowed. Now I'm not I don't want people to think I'm actually having a go.'
He also revealed how he piled on the pounds.
Gervais said: 'I got fat because I ate too much and didn't do any exercise. As soon as I stopped eating too much and started doing exercise I became thin.'