Smokers have a lower capacity than nonsmokers. Tobacco smokers are twice as likely to develop Crohn's disease as nonsmokers. Tobacco smoke causes fatal lung disease in nonsmokers. Death from laryngeal cancer is 20 times more likely for heaviest smokers than for nonsmokers. There is much controversy concerning whether smokers are actually thinner than nonsmokers. However, the stress levels of adult smokers are slightly higher than those of nonsmokers. Smokers have a 53% greater chance of divorce than nonsmokers. Secondhand smoke is also associated with impaired vasodilation among adult nonsmokers. Heart disease caused by secondhand smoke kills around 46,000 nonsmokers every year. Young nonsmokers who see tobacco advertisements are more likely to smoke. Those who smoke cigarettes have nearly twice the risk of TB compared to nonsmokers. Much research has come from studies of nonsmokers who are married to a smoker. This risk is significantly lower in nonsmokers&colon; 1.3% in men and 1.4% in women. This amount is about 10 times the average daily intake of benzene by nonsmokers. However, the benefits of drinking occurred only among nonsmokers.