Mandatory Credit: Photo by Tim Rooke/REX/Shutterstock (9349576j) Catherine Duchess of Cambridge, Prince William, Crown Princess Victoria, Prince Daniel during a visit to Karolinska Institute Prince William and Catherine Duchess of Cambridge visit to Sweden, Day 2 - 31 Jan 2017 The Duke and Duchess, accompanied by Crown Princess Victoria and Prince Daniel, will meet with academics and practitioners to discuss Sweden?s approach to managing mental health challenges, including the impact of physical activity on mental health. Their Royal Highnesses will also hear about the Youth Aware of Mental Health (YAM) programme run by the National Association for Suicide Research and Prevention of Mental Ill Health (NASP).