John, an infantry officer for 19 years, was held up at gunpoint, bombed and saw friends and colleagues killed in action. He tells Claudia Hammond about the Post Traumatic Stress Disorder that he suffered when he left the armed forces. And in the first-ever UK study of military personnel in a theatre of war, in Iraq, to test mental health, the military is revealed to have experienced less psychological distress than police or fire officers. One of the study's co-authors, Professor Simon Wessely, Director of the King's Centre for Military Health Research, describes the mental health lessons that are being being learned from the front line.

Antidepressants and Morality: Molly Crockett from the Behavioural and Clinical Neuroscience Institute at the University of Cambridge says how a particular group of anti depressants, SSRIs, Selective Serotonin Reuptake Inhibitors, have been found to increase morality by raising the levels of Serotonin in the brain.

Community Treatment Orders: Introduced two years ago to enable people with mental illness to leave hospital and continue their treatment at home, new figures show ten times more CTOs have been issued than original Department of Health predictions. Reka, who has a diagnosis of bi-polar disorder, describes her experience of spending a year subject to a CTO, compelled to take injections of anti-psychotic medication which she says left her "like a zombie". Anthony Deary from the Care Quality Commission, Tony Maden, Professor of Forensic Psychiatry from Imperial College in London and Dr Tony Zigmond, mental health law lead for the Royal College of Psychiatrists discuss the reasons for the ballooning use of CTOs.

Producer: Fiona Hill.