Smoking causes a significant number of deaths each year, both for smokers themselves and those around them through secondhand smoke exposure. While warnings on cigarette packs note the health risks, more people take up smoking each year than quit. Nicotine addiction makes quitting smoking extremely difficult. In addition to affecting their own health, pregnant smokers also endanger the health of their unborn children. Despite the many deaths caused by tobacco each year, governments and organizations have been unable to significantly reduce smoking rates due to the powerful tobacco industry lobby.