In her role as the Royal Patron of children's mental health charity Place2Be, the Duchess of Cambridge filmed a two-minute video urging people to speak up about mental health issues this week.
In the video, filmed at Bethlem and Maudsley Hospital School in Beckenham, south London, the pregnant royal is pictured sitting in a classroom.
She says: "Both William and I have seen many young people are struggling to cope with the impact of bullying, bereavement, domestic violence, family breakdown and more. Without support, the effects of these challenges can be traumatic, leading to serious issues such as anxiety, depression, addiction and self harm. "
Kate, 33, urges adults and children to "talk openly" during this Children's Mental Health Week, saying that she and Prince William believe that "early action can prevent problems in childhood from turning into larger ones later in life."
She adds: "We need to help young people and their parents understand it isn't a sign of weakness to ask for help. A child's mental health is just as important as their physical health and deserves the same quality of help. "
Kate was pictured visiting Place2Be back in November 2013, where she attended a Resilience and Emotional Strength in Schools Forum, listening to people involved in the charity. She also learned about the battle to combat cyber bullying.
In a letter about her role as Royal Patron, Kate said she was "enormously honoured" and "hugely excited" to be working with the charity.
Kate and William are expecting their second child in April.
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