Drugs

There are several types of psychoactive chemicals (drugs), some legal and some illegal or controlled. The legal drugs include nicotine, caffeine, and alcohol. Illegal drugs include amphetamines, opiates, cannabis, and cocaine. Caffeine is the most common and frequently used drug in the world. Psychoactive chemicals can be very addictive. Opiates, amphetamines, cocaine, and nicotine are highly addictive. Cannabis, caffeine, and alcohol are also addictive but not as severely. Those who are addicted to drugs feel as though they need the drugs to survive, even if they really do not. This feeling of need is called craving. People build up a tolerance to drugs, meaning they need to use more to feel the same effects. They also feel withdrawal, a feeling of severe sickness, if they stop taking them. Some people are genetically disposed to addiction. These people should be very careful when consuming psychoactive chemicals.