One Directions upcoming movie ‘This Is Us’ is to enlist the help of a doctor to try to explain ‘intense fan reaction’.

The Director of the movie, Morgan Spurlock, says he wanted to explore why Directioners go crazy when they hear 1D’s music.

Spurlock will be seen in the film interviewing doctors, to see what’s up with the minds of all their crazy fan girls!

It will hopefully explain what happens in our brains when we hear ‘What Makes You Beautiful’ or ‘Live While We’re Young’ etc.

He has revealed: We ask the question ‘Why Them?’ We talked to this one doctor who tells us what happens inside a girl’s body when she hears One Direction like what happens in her brain and what goes on inside of her.

Personally, I don’t think that there is anything to analyse, it’s perfectly normal…

We just LOVE One Direction!

But it’ll be interesting to see what they come up with.

One Directions 3D movie ‘This Is Us’ is due to hit the big screens at the end of August, and we’re mega excited!!