a fetus is unaffected by its mother's use of tobacco. When woman smokes cigarettes during pregnancy, her exposed to many harmful chemicals. Reference: https://www.acog.org/womens-health/faqs/ tobacco-alcohol-drugs-and-pregnancy Tobacco and pregnancy | Encyclopedia

Interestingly, the authors have also indicated that light smokers were most often classified as non-smokers and there is prior literature to support the classification of never use as someone who has smoked less than 100 cigarettes in their lifetime (Pomerleau et al., 2004)

However, it is much more convenient to some, as the recordings can be listened to in the comfort of your own home

Two people may be chronologically the same age, but have very different biological ages based on lifestyle, diet, and age-related disease risks

They proposed a mandatory scheme where the tobacco industry would pay for the full costs of cleaning up and processing cigarette waste