environmental tobacco smoke contains over 40 known carcinogens How does smoking cause cancer? Tobacco Smoke - Breast Cancer

Secondhand Smoke and Fertility Risks for Women Secondhand smoke poses serious risks for women trying to conceive

*** Rural/urban designation (urbanization level), termed metropolitan statistical area in a previous report, is based on the 2013 National Center for Health Statistics (NCHS) Urban-Rural Classification Scheme for Counties ( The original variable for urbanization level in the NHIS public use data files is four levels

Semin Reprod Med

it gives one the feeling of warmth during the rainy season (This may explain why reverse smoking is practiced primarily in equatorial climates, which usually have a long rainy season.)