Obese teenagers who get between seven-and-a-half and eight-and-a-half hours sleep a night have less chance of developing Type 2 diabetes, a new study has claimed.

In a study of 62 teenagers, researchers from the Children's Hospital of Philadelphia found that the recommended sleeping time ensured insulin and blood sugar remained at optimum level.

The findings, published in the journal Diabetes Care, indicate that a healthy sleeping pattern could help ward off the onset of diabetes. The researchers found that spending less time in bed increased the chance of higher glucose levels, while less sleep caused insulin levels to drop.

Dr Dorit Koren, who led the research, said the findings reinforce previous studies which have found a link between sleep deprivation and a higher risk of Type 2 diabetes.

He said: "Our study found to keep glucose levels stable, the optimal amount of sleep for teenagers is 7.5 to 8.5 hours per night."

The scientists will now try to recreate their findings in teenagers' homes, rather than in a laboratory setting.

Story posted by Robert Mair.

 Teen boy sleeping