"Male anxiety and depression present in a completely different way to women, and it's a scandal how this means they are all but ignored," says Martin Pollecoff, the chairman of the UK Council for Psychotherapy.
"If you look at the Diagnostic and Statistical Manual of Mental Disorders, which is the bible for diagnosing mental-health conditions, there are 800 pages of symptoms women will readily recognise because they express feelings, but few for men, whose behaviours under stress can be quite displaced.
It's a terrible thing to say, but women feel and men act out. They slope off to the pub, smoke a joint, start a fight, see a prostitute. Anxious men tend to lose themselves. And then the awful thing is, their anxiety is not diagnosed and we end up in this terrible situation where the first time we know something is wrong is when they take their own lives."
Dr Billy Boland, a consultant psychiatrist and the chairman of the faculty of general adult psychiatry at the Royal College of Psychiatrists in London, says that, despite some high-profile figures coaxing men to explore their feelings more openly, there is still a significant stigma attached to men's anxiety. "Men may admire celebrities like the [former] footballer Rio Ferdinand talking about his mental-health issues, but you have to remember that such figures are rarefied and more difficult to relate to than, say, male friends seen socially or at work. Men may take their cues from their immediate social circle, and broadly there remains a culture of shame around male anxiety. This can have a further effect; men go into denial and don't even acknowledge their symptoms. It's surprising how often men don't even realise they are anxious and depressed, let alone that they can be helped."
We all need a level of anxiety to function. It's how children get delivered to school on time, jobs get done and bills get paid. One of the problems is deciding what is productive and what is destructive anxiety, Boland says.
"If I wasn't slightly anxious about paying my mortgage then I might not bother getting out of bed and going to work. A certain level of anxiety is productive. But a man suffering headaches or muscular pain that doesn't seem to have an obvious cause — that is possibly displaced anxiety in some way and it can be quite hard to diagnose the underlying problem. For me, the key to it all is conversation. Often it takes a friend or loved one to notice an ailment or perhaps increased risk-taking behaviour, such as drinking. It's them who will say, 'You know, you don't seem quite yourself and I think we can do something to improve things.' "