Beware! Smoking can make you diabetic

Risk decreases as time elapses after smokers quit

Ians September 19, 2015
Risk decreases as time elapses after smokers quit. PHOTO: INDIATODAY

Smoking cigarettes or breathing in second-hand tobacco smoke significantly increases the risk of Type-2 diabetes, warns a new study.

While current smokers are at around 37 per cent increased risk of developing Type-2 diabetes, passive smoking or breathing in second-hand smoke could raise the odds by as much as 22 per cent, the findings showed.

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The researchers estimated that 11.7 per cent of cases of Type-2 diabetes in men and 2.4 per cent in women (about 27.8 million cases in total worldwide) may be attributable to active smoking.

They also found that risk decreases as time elapses after smokers quit.

"Cigarette smoking should be considered as a key modifiable risk factor for diabetes. Public health efforts to reduce smoking will have a substantial impact on the global burden of type 2 diabetes," said study co-author Frank Hu, professor of nutrition and epidemiology at Harvard TH Chan School of Public Health in Boston, US.

In this study, the researchers conducted an analysis of 88 previous studies on the association between smoking and Type-2 diabetes risk, looking at health data from nearly six million study participants.

They found that when compared with people who never smoked, current smoking increased the risk of Type-2 diabetes by 37 per cent, former smoking by 14 per cent and passive smoking (breathing in second-hand smoke) by 22 per cent.

Among current smokers, the amount smoked made a difference. The increased risk of developing Type-2 diabetes was 21 per cent, 34 per cent, and 57 per cent for light, moderate, and heavy smokers, respectively.

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The study was published in the journal The Lancet Diabetes & Endocrinology.


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