Mary-Kate and Ashley Olsen are set to star in a TV show in the US promoting healthy eating, according to media reports.

The pair apparently met with US TV bosses to discuss the show aimed at four and five year olds called Sportee Kids.

A source told US Weekly, "It will focus on fitness and healthy eating."

There were reports that some of the show's executives were a little apprehensive about doing a nutrition show with the Olsen twins, given that Mary-Kate underwent rehabilitation for anorexia in 2004.

However, a representative for the twins said "There's no truth in people being scared to work with them. They're healthy and fine."