Busy Swedish scientists have found that anxiety, depression and sleepless nights increase the risk of diabetes in men.

It is men who have high levels of "psychological distress" had have more than double the risk of developing type 2 diabetes than those with low levels.

The study looked at 2,127 men and 3,100 women, found no such link in women.

They questioned men with normal blood glucose levels for signs of psychological distress, including anxiety, insomnia, depression, apathy and fatigue. Eight to 10 years later, these men were tested for diabetes. Those men who had the highest levels of psychological distress were 2.2 times more likely to develop the condition while no such link has been found in women. The link was independent of factors such as age, body mass index, family history of diabetes, smoking, physical activity and socio-economic background.

The researchers believe that stress is very likely to affect the way the brain regulates hormones. Depression is also known to influence a person's diet and levels of physical activity in a negative way.
The reason the women seem to be unaffected may lie in different coping strategies between males and females.

Women communicate about their problems and let go of stress that way while men, on the other hand, worsen their health and state of mind by adopting drinking, drug use and other private activities as coping skills.

Previous studies had already showed that stress is a risk factor for type 2 diabetes but others have looked at the link between sleep disorders, such as insomnia, and diabetes. This latest research appears to confirm that there might be something in this.