Women who struggle to sleep at night are more likely to develop type 2 diabetes, researchers claimed yesterday.
Experts at Harvard School of Public Health found that people who complained of sleeping disorders were also more likely to have high blood pressure, weight problems and depression.
The US team examined data from 130,000 women gathered over a decade, and found that some who struggled to sleep had four times the risk of becoming diabetic.
The findings come after a British charity warned this week that nearly half of women in Britain were sleep deprived.
The Sleep Apnoea Trust Association surveyed of 4,100 British adults and found that 46 per cent of women have trouble sleeping, compared with just 36 per cent of men.
But only one in four women who have trouble sleeping tell their doctor, according to the poll, meaning the problem is likely to be much greater that is thought.
Experts warn that not getting enough sleep can be a warning sign of an underlying severe medical condition.
The Harvard team divided those they studied into groups, depending on how many different sleep disorders they reported.
The four problems they recorded were sleeping difficulty, frequent snoring, sleeping for less than six hours a night, and sleep apnoea, in which sufferers stop breathing repeatedly while they sleep.
Those who reported one sleep disorder were 47 per cent more likely to develop type 2 diabetes, those who reported having two conditions had around twice the risk, while for three conditions it was approximately three times the risk, and for all four it was four times the risk.
Writing in the journal Diabetologia, the authors said: "Sleeping difficulty was significantly associated with type 2 diabetes.
"Our findings highlight the importance of good sleeping patterns and having enough sleep for preventing type 2 diabetes."
- Daily Mail