How old is old enough to be left alone, especially if younger brothers or sisters are involved? With Sarah Crown Mumsnet editor and John Cameron Head of Childline from the NSPCC. Men and relationships: the last in the series in which Suzi Godson the Times relationship columnist speaks to men of all ages. Brian Farley is in his seventies, he talks about retirement, caring for his wife Valerie who had Multiple Sclerosis and the experience of becoming a widower; OCD in children, with Professor Uta Frith and Dr. Bruce Clark Clinical Director of the Child and Mental Health Service at the South London Maudsley NHS Foundation Trust; historian Katherine Connelly takes Louise Adamson on the first of her series of walking tours to discover the sites associated with the history of the women of the East End of London; women are familiar with their monthly hormonal cycles but what do we know about men's Testosterone cycles? Dr. Leighton Seal a consultant endocrinologist from St George's Hospital London explains.

Presenter: Jenni Murray

Producer: Caroline Donne.