Cocaine users have babies addicted at birth. Marijuana use causes the synaptic cleft to enlarge which may result in impairment of speech, comprehension, memory and sleep. Cocaine stimulates the CNS causing restlessness, tremors and convulsions. Cocaine alters normal electrical activity of the brain which can result in seizures or convulsions similar to epilepsy. Tobacco, both smoked and smokeless, is the leading cause of cancers of the cheeks, gums, palate.
Smokers lose their teeth at a rate three tunes greater than 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. Carcinogens absorbed from cigarette smoke and smokeless tobacco are concentrated and excreted in the urine. The bladder and the kidneys are in constant contact with these cancer-causing chemicals.