"As I have spoken to young people on my travels, one of the recurring themes is the lack of mental health support for those under 30 and the remaining stigma and absence of services available", he said.
Meghan, who is due to give birth to her first child in spring, wore a blush pink blazer and co-ordinating dress by Brandon Maxwell with her Aquazzura Matilde pumps and her Carolina Herrera "Insignia" roll clutch bag for the visit.
Hello! said that they had deleted hundreds of abusive and threatening comments between users, with one commenter suggesting another should "drink bleach".
The Duchess of Sussex has made her theatre debut.
Later today, Meghan will be attending an event at London's National Theatre, of which she recently became a patron. "But you're much quieter than when I was last here!"
"I think she's further along than she's saying she is, I really do".
It may be a new year, but it seems Meghan Markle's older half-sister, Samantha, has not turned a new leaf, at least when it comes to stirring controversy.
The members of the Public Act Pericles Company-almost all of whom are non-professionals who have never acted before-participated in a workshop with Meghan where she watched their warm-ups and as several actors rehearsed their lines.
Meghan also met with carpenters, metalworkers and other craftsman preparing the sets for future theatre productions.
"Meghan always wants her girlfriends around and wants them to be godparents to her new baby but these tiffs might have really damaged her friendships".
"It's a natural fit because she knows what a rehearsal room is, she knows what dressing rooms are and is passionate about the impact the arts can have".