Titled, “Electronic cigarettes and insulin resistance in animals and humans: Results of a controlled animal study and the National Health and Nutrition Examination Survey (NHANES 2013-2016)”, the study used experimental animals and human data, obtained from 3,989 participants of the United States National Health and Nutrition Examination Survey (NHANES).
When compared with non-vapers, vapers showed no significant difference in glucose and insulin levels, after controlling for age, sex, race, physical activity, alcohol use and BMI.
The researchers assessed the association between e-cigarette and conventional cigarette exposures, and insulin resistance, by using the homeostatic model assessment of insulin resistance (HOMA-IR) and glucose tolerance tests (GTT).
Mice on a standard chow diet exposed to e-cig vapour and cigarette smoke showed HOMA-IR and GTT levels comparable with filtered air-exposed controls. Similarly, in the human participants from NHANES, no significant association between the consumption of any nicotine containing products and insulin resistance was observed.
Therefore, when compared with non-users of e-cigarettes/conventional cigarettes, vapers showed no significant difference in HOMA-IR or GTT levels after controlling for age, sex, race, physical activity, alcohol use and BMI. To this effect, concluded the researchers, no association between vaping and insulin resistance can be observed.
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