Corden made the comments while speaking to actor David Tennant on his podcast.
James Corden has complained that "chubby" actors tend to be shut out when it comes to romantic roles in movies and TV.
He also said he felt like larger actors are often cast as the funny friend, or in a comic relief role.
Speaking on the podcast, aptly entitled 'David Tennant Does a Podcast with...', the Gavin and Stacey creator spoke passionately about the subject.
He said: "If you only watch television or films, if an alien came back and they had to take a reading on planet Earth by just watching films or TV, they would imagine that if you are chubby or fat or big, you never really fall in love, you never have sex.
"Certainly no-one really ever finds you attractive. You will be good friends with people who are attractive and often will be a great sense of comfort to them and perhaps chip in with the odd joke every now and again."
He went on to say that:
"It felt like if the world of entertainment was a big banquet table, people are like, 'There isn't a seat for you here.'"
You can listen to the podcast in full
here.
