Kim Kardashian West has launched a fundraising initiative for the Child Mind Institute.

The 'Keeping Up With the Kardashians' star - who has three children; North, five, Saint, two, and Chicago, seven months, with her husband Kanye West - has asked her fans to dig deep in their pockets and donate cash to the non-for-profit organisation, based in New York City, as she wants to try and help children suffering with mental health or learning disabilities get the help they need in schools so they can ''thrive''.

Taking to her Facebook account, Kim said: ''As a mother of three, I think nothing is more important than my children's health. This includes their physical and mental health. Over 17 million kids in the US struggle with a mental health or learning disorder like anxiety, ADHD, dyslexia or depression, making it hard for them to learn and succeed. Yet with proper diagnosis and treatment, these children can thrive. As students return to the classroom this fall, I want to do what I can to make sure they have all they need to succeed in school and in life, now and in the future.

''So you can see children's mental health and the work of the Child Mind Institute means a lot to me. $5, $50 or $500. Every dollar helps!

''The Child Mind Institute is transforming the lives of children and families struggling with mental health and learning disorders.

''They work every day to care for kids who come from around the world for help, and their researchers are studying the brain to figure out what causes mental health disorders and how to better diagnose and treat these conditions.

''And they are working in classrooms, with students, teachers and parents, to teach children to manage their emotions in a healthy way and get kids the help they need.''

Mental health is something that is very close to the 37-year-old reality TV star's heart as not only is she now a mother but her husband Kanye has previously suffered with breakdowns and he has admitted that at times he's felt suicidal.