This may involve repeated chest X-rays, pulmonary function tests, and regular assessments by a pulmonologist
If they smoked inconsistently, try to estimate an average
[2] Bring a portable toothbrush and toothpaste with you so you can quickly freshen up your mouth on the go
Using the help of this calculator, you can understand exactly how many cigarettes you are consuming by simply inhaling polluted air
Other variables The following data were collected as confounding variables: age, sex, education level ( elementary school, middle school, high school, or college), household income (quartile), alcohol intake (drinking alcohol at least once a month), adequate aerobic physical activity (moderate physical activity 150 min/week or vigorous physical activity 75 min/week), obesity status (body mass index 25 kg/m 2 ), and comorbidities (defined by questionnaires regarding doctor-diagnosed chronic diseases such as hypertension, diabetes, or dyslipidemia) 17,18
Sample processing and analysis was performed by Metabolon (Durham, NC, USA) using an automated MicroLab STAR system (Hamilton Company, Reno, NV, USA)
