Males experience lowered testosterone levels, and testosterone is essential for development of secondary male characteristics. Females may experience infertility, pregnancy complications and changes in sexual characteristics. Cocaine users have babies addicted at birth. C. Tobacco and the Body Mouth, Larynx and Esophagus - Smokers have three times as many cavities as nonsmokers. Tobacco, both smoked and smokeless, is the leading cause of cancers of the cheeks, gums, palate, tongue and lips.
Smokers lose their teeth at a rate three times greater than nonsmokers.
Stomach and Heart - Peptic ulcers are twice as high in smokers as in nonsmokers. Nicotine from any source causes secretion of excessive amounts of gastric acids and delays healing of ulcers. Nicotine is a powerful constrictor of small arteries. Insufficient oxygen supply to the heart is a cause of heart attacks. Pancreas, Bladder and Kidneys - Smokers have a 100 percent increased risk of developing cancer of the pancreas, three times the risk of bladder cancer and a 50 percent greater rate of kidney cancer.