The Duke of Sussex has said that the phrase “mental health” should be replaced with the term “mental fitness” to address something that “affects every one of us”.

Attending a conference for the Diana Award, the charity established 25 years ago in honour of his late mother, the duke addressed an audience at the Sheraton Hotel in Manhattan. He called on governments around the world to listen to the problems faced by young people before making policy decisions.

“Surely one of the solutions here is for governments to implement, or at least find people young people like yourselves, and bring them into decision making, policy-making situations before the problems exist,” Harry said to the audience. “That is where the difference is going to be made.