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Associations of smoking indicators and cotinine levels with telomere length: National Health and Nutrition Examination Survey.

ABSTRACT: The influence of smoking exposure on telomere length with a focus on the impact of race has rarely been discussed. We performed a cross sectional analysis into the associations of smoking indicators with leukocyte telomere length (LTL) by race among 5864 nationally representative sample of US adults (?20?years). Data from 1999 to 2002 National Health and Nutrition Examination Survey was used for the analysis. Smoking indicators were assessed by interviews and serum cotinine levels. LTL was quantified by polymerase chain reaction. Multiple linear regressions were used to assess the association with adjustment for covariates, sample weights and design effects separately for Whites, Blacks and Mexican Americans. The intensity of smoking, measured by the average number of cigarettes consumed per day, was negatively associated with LTL among Whites (?: -3.87, 95% CI: -5.98 to -1.21) and among Blacks (?: -15.46, 95% CI: -29.79 to -2.12) participants. Compared with cotinine level?

SUBMITTER: Khan RJ 

PROVIDER: S-EPMC6536775 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature

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Associations of smoking indicators and cotinine levels with telomere length: National Health and Nutrition Examination Survey.

Khan Rumana J RJ   Gebreab Samson Y SY   Gaye Amadou A   Crespo Pia R PR   Xu Ruihua R   Davis Sharon K SK  

Preventive medicine reports 20190517

The influence of smoking exposure on telomere length with a focus on the impact of race has rarely been discussed. We performed a cross sectional analysis into the associations of smoking indicators with leukocyte telomere length (LTL) by race among 5864 nationally representative sample of US adults (≥20 years). Data from 1999 to 2002 National Health and Nutrition Examination Survey was used for the analysis. Smoking indicators were assessed by interviews and serum cotinine levels. LTL was quant  ...[more]

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