The inclusion of residual volume-to-total lung capacity ratio may add another dimension to COPD not routinely captured by standard airflow indices that could be predictive of lower maximum exercise capacity.
Electronic cigarettes was the most commonly used tobacco product in high and middle school students in 2017.
The American Academy of Family Physicians and other signatories called on FDA to apply the proposal to other combustible tobacco products.
E-cigarettes are the most commonly used product in middle and high school students with or without asthma.
In adolescent e-cigarette users, stronger nicotine dependence was associated with being in a higher grade in school, vaping at an earlier age, vaping more frequently, and the use of higher nicotine concentrations.
Body mass index and body fat distribution may influence smoking behaviors.
Redeemable deposits and rewards were superior to free smoking cessation aids with respect to sustained abstinence.
Researchers examined nationwide population-based incidence of lung cancer according to sex, race or ethnic group, age group, birth year, and calendar period of diagnosis.
Toxicant exposure to tar, carbon monoxide, and nicotine are lower with hookahs, but still substantial, compared with cigarettes.
Flavoring commonly used in e-cigarettes suppresses cilia beat frequency, lasting for 60 minutes.
Obesity may be linked with an increased risk of smoking as well as an increase in the number of cigarettes smoked per day.
Using e-cigarettes every day or some days increased the likelihood of developing chronic obstructive pulmonary disease.
Researchers examined the relationship between smoking marijuana and the decline in FEV1 in adults aged 40 years and older.
The most eligible smokers were populated in South, which had most screening sites but the low screening rates
Four models were well-calibrated and had higher areas under the curve than 5 models that overestimated lung cancer risk.
Although there has been a decrease in e-cigarette prevalence in current smokers, there has been an increase in never smokers.
Children with exposure to secondhand marijuana and tobacco smoke have an increased rate of emergency department visits.
Although cigarette taxes were supposedly implemented to encourage smokers to quit, they can have a disproportionate effect on people of low-income status.
The rate of liquid nicotine exposure in children younger than 6 years of age has declined since 2015, but it continues to pose a serious poisoning risk.
Patients with severe asthma who were current smokers were distinguishable from ex-smokers based on their sputum proteomic level of colony stimulating factor 2.