When James Longman was nine, his father – who had schizophrenia – killed himself.
James, who suffers from depression himself, has often wondered whether there is a genetic link in mental health.
He met scientists at King’s College London who are developing a technique to help patients improve their mental health.
Read James’s story here.
Watch the Victoria Derbyshire programme on weekdays between 09:00 and 11:00 on BBC Two and the BBC News Channel.