Men who are worried about the recession could suffer reduced levels of testosterone, a doctor has warned.
Chronic stress caused by financial worries, redundancy or working longer hours may cause levels of the hormone to drop, Dr Richard Petty said.
Testosterone is linked to sexual function, circulation and muscle mass, as well as mood, memory and concentration.
Previous studies have shown a link between chronic stress and lower testosterone levels.
Dr Petty, who works at a private clinic for men, said: "When a man becomes grumpy or irritable, it's easy to blame work or simply the effects of ageing.
"In the short-term, stress can increase levels of testosterone and this is useful to help people respond quickly to pressures and new situations.
"But chronic stress, which is ongoing, is a major factor in the decline of testosterone.
"Chronic stress occurs all too frequently due to our modern lifestyles, when everything from high-pressured jobs to unemployment keeps the body in a state of perceived threat."
Lower levels of the hormone can cause irritability, lethargy, low sex drive and a lack of concentration.
Dr Petty advised men to reduce their stress levels as much as possible by getting enough rest, eating healthily and exercising.
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