Study Finds Link Between Quitting Smoking and Poor Diabetes Control

A new study has indicated that people that suffer from Type 2 diabetes that have quit smoking have a risk of seeing a temporary decline in their glycemic control. The research indicates that this issue could last up to three years. The study was led by Dr Deborah Lycett of Coventry University and funded by the National Institute for Health Research’s School for Primary Care Research. It was published to the journal, The Lancet Diabetes & Endocrinology.


The researchers looked at the primary care records of over 10,000 adult smokers that have had Type 2 diabetes within the past six years in order to determine whether quitting was associated with changes in diabetes control.


The study determined that for the 3,000 or more people who had quit and remained abstinent from smoking for at least a year, the HbA1c levels of these individuals increased by roughly 2.3 mmol/mol. Over time this figure decreased gradually as the person remained abstinent from smoking.


At the same time people who were continuously smoking and did not stop smoking at any point in the study saw an increase in HbA1c levels. The researchers used a regression model to compare weight change data between the two groups. The conclusion was that the weight changes that are commonly associated with quitting smoking did not have a significant impact on the association between smoking cessation and HbA1c levels.

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