Technically, any substance other than food that alters our bodily or mental functioning is a drug. Many people mistaken 62. _____. believe the term drug refers only to some sort of medicine or an illegal chemical taken with drug addicts. They don’t realize 63. _____. that familiar substances such as alcohol and tobacco are also not drugs. This is why the more neutral term substance is now 64. _____. used by many physician and psychologists. The phrase "sub- 65. _____. stance abuse" is often used instead of "drug abusive" to 66. _____. make clear that substances such as alcohol and tobacco can be just as harmfully used as heroin and cocaine. We live in a so- 67. _____. ciety which the medicinal and social use of substances is per- 68. _____. vasive: an aspirin to quite a headache, some wine to be socia- 69. _____. ble, coffee to get going in the morning, a cigarette for the nervous. When do these socially acceptable and apparently 70. _____. constructive use of a substance become misuses First of all, most substances taken in excess will produce positive effects 71. _____. such as poisoning or intense perpetual distortions. Repeated use of a substance can also lead to physical addiction or sub- stance dependence.