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The epidemiological evidences for the association between cooking fuel exposure and respiratory health were inconsistent, and repeated-measures prospective evaluation of cooking fuel exposure was still lacking. We assessed the longitudinal association of chronic lung disease (CLD) and lung function with cooking fuel types among Chinese adults aged ≥ 40 years. In this prospective, nationwide representative cohort of the China Health and Retirement Longitudinal Study from 2011 to 2018, 9004 participants from 28 provinces in China were included. CLD was identified based on self-reported physician diagnosis in 2018. Lung function was assessed by peak expiratory flow (PEF) in 2011, 2013 and 2015. Multivariable logistic and linear mixed-effects repeated-measures models were conducted to measure the associations of CLD and PEF with cooking fuel types. Three-level mixed-effects model was performed as sensitivity analysis. Among the participants, 3508 and 3548 participants used persistent solid and clean cooking fuels throughout the survey, and 1948 participants who used solid cooking fuels at baseline switched to clean cooking fuels. Use of persistent clean cooking fuels (adjusted odds ratio [aOR] = 0.73, 95 % confidence interval [CI]: 0.61, 0.88) and switch of solid fuels to clean fuels (aOR = 0.81, 95 % CI: 0.67, 0.98) were associated with lower risk of CLD. The use of clean cooking fuels throughout the survey and switch of solid fuels to clean fuels in 2013 were also significantly associated with higher PEF level. Similar results were observed in stratified analyses and different statistical models. The evidence from CHARLS cohort suggested that reducing solid cooking fuel exposure was associated with lower risk of CLD and better lung function. Given the recent evidence, improving household air quality will reduce the burden of chronic lung diseases.

Household air pollution from cooking fuel may have adverse health effects, particularly among women from countries like Bangladesh, where women participate in most household cooking activities. However, little is known about how cooking fuel influences adult women's blood pressure (BP) status in Bangladesh. This study assessed the association between household cooking fuel and women's BP in Bangladesh. Data of 6543 women (aged ≥18 years) from the latest nationally representative Bangladesh Demographic and health survey 2017-18 were used in this study. This survey collected data on various variables, including women's BP and cooking fuel. Multivariable regression models were used for this evaluation. About 82.3% of women were living in households using solid cooking fuel. Women's average systolic BP (SBP) and diastolic BP (DBP) were 121.5 mmHg and 80.7 mmHg, respectively, and 25% had elevated BP. Women residing in a household using solid fuel had significantly higher SBP (β 3.76 mmHg, 95 confidence interval (CI) 2.00, 5.51) and DBP (β 1.17 mmHg, 95% CI 0.17, 2.18) relative to women from households using clean fuel. The odds of elevated BP was 58% higher (adjusted odds ratio, 1.58, 95% CI 1.19, 2.11) among women residing in households using solid fuels compared to their counterparts. Usage of solid cooking fuel was predominantly high and negatively impacted women's BP status in Bangladesh. In addition to other lifestyle change interventions, improved cooking facilities and clean cooking fuel provision and monitoring could be important initiatives to reduce the burden of elevated BP among women. [ABSTRACT FROM AUTHOR]

The epidemiological evidences for the association between cooking fuel exposure and respiratory health were inconsistent, and repeated-measures prospective evaluation of cooking fuel exposure was still lacking. We assessed the longitudinal association of chronic lung disease (CLD) and lung function with cooking fuel types among Chinese adults aged ≥ 40 years. In this prospective, nationwide representative cohort of the China Health and Retirement Longitudinal Study from 2011 to 2018, 9004 participants from 28 provinces in China were included. CLD was identified based on self-reported physician diagnosis in 2018. Lung function was assessed by peak expiratory flow (PEF) in 2011, 2013 and 2015. Multivariable logistic and linear mixed-effects repeated-measures models were conducted to measure the associations of CLD and PEF with cooking fuel types. Three-level mixed-effects model was performed as sensitivity analysis. Among the participants, 3508 and 3548 participants used persistent solid and clean cooking fuels throughout the survey, and 1948 participants who used solid cooking fuels at baseline switched to clean cooking fuels. Use of persistent clean cooking fuels (adjusted odds ratio [aOR] = 0.73, 95 % confidence interval [CI]: 0.61, 0.88) and switch of solid fuels to clean fuels (aOR = 0.81, 95 % CI: 0.67, 0.98) were associated with lower risk of CLD. The use of clean cooking fuels throughout the survey and switch of solid fuels to clean fuels in 2013 were also significantly associated with higher PEF level. Similar results were observed in stratified analyses and different statistical models. The evidence from CHARLS cohort suggested that reducing solid cooking fuel exposure was associated with lower risk of CLD and better lung function. Given the recent evidence, improving household air quality will reduce the burden of chronic lung diseases. [Display omitted] • This is a prospective, nationwide representative cohort study in China. • Solid cooking fuel use is associated with higher risk of CLD and worse lung function. • Switch of solid fuels to clean fuels benefits respiratory health. • Temporal association between cooking fuel type and respiratory health is plausible. • Prospective evidence about cooking fuel type and respiratory health is strengthened. [ABSTRACT FROM AUTHOR]

Objective: To investigate indoor factors affecting fractional exhaled nitric oxide (FeNO) in community residents. Methods: A total of 2404 adults (865 men, 1539 women, mean age 51.7 ± 13.3 years) were recruited to the study. Factors affecting FeNO were analyzed by multiple linear regression analysis. Results: Participants without a kitchen exhaust fan/hood had higher FeNO (GM: 10.21%, 95% CI: 4.18%-16.59%). Participants engaged in home cooking who used only liquefied petroleum gas had higher FeNO (GM: 5.75%, 95% CI: 0.10%- 11.73%) compared to those using natural gas for residential (home) cooking. Conclusion: Nonuse of a kitchen exhaust fan/hood and use of liquefied petroleum gas among persons engaged in home cooking were associated with higher FeNO levels. [ABSTRACT FROM AUTHOR]