Giving up smoking?

Giving up smoking sharply increases the risk of developing type-two diabetes, a US study suggests.

Researchers found quitters had a 70% increased risk of developing type-two diabetes in the first six years without cigarettes compared with non-smokers.

This is because they tend to put on weight.

However, the Annals of Internal Medicine study stressed that this should not be used as an excuse to carry on smoking.
The Johns Hopkins team also stress that smoking is a well known risk factor for type-two diabetes - as well as many other health problems, such as heart disease, stroke and cancer.

Researcher Dr Jessica Yeh said: "If you smoke, give it up. That's the right thing to do.

"But people have to also watch their weight."

The study, based on 10,892 middle aged adults who were followed for up to 17 years, found the risk of developing type-two diabetes was highest in the first three years after giving up smoking.

Around 1.8% of people giving up smoking developed type 2 diabetes each year during that period.

If quitters avoided developing the condition for 10 years, then their long-term risk returned to normal.

People who made no effort to give up smoking had a constant 30% increased risk of type-two diabetes compared with non-smokers.