smoking is associated with increased risk for cancer, heart disease, emphysema, as well as a reduction in fertility and multiple complications during pregnancy. Tobacco use prohibits nutrients from proper absorption in the womb, and the mother is at greater risk for having a still or premature birth. Additional risks of tobacco smoking during pregnancy include Sudden Infant Death Syndrome, infants being born with weak lungs resulting in asthma and increased susceptibility to infections, as well as birth defects, including cleft lip.
Research shows that stress and negative affect are primary motivators underscoring cigarette usage in the general population. Higher levels of stress lead to an increase in the number of cigarettes smoked per day, especially if the individual experiencing high levels of stress does not have a strong social support system.