Alcohol and drug use has many negative health consequences. For instance, excessive alcohol use can cause damage to the liver and pancreas, ulcers, diabetes and heart problems. Cocaine use can cause holes in the nasal cartilage, lung damage, ulcers, kidney failure and heart attacks.
Alcohol and drugs cause mood changes. Some people like some of the mood changes. For instance, they may feel happy or even euphoric. They may feel relaxed. Alcohol and drugs can cause unpleasant mood changes, too, though. Alcohol and many drugs can lead to depression. Some drugs cause anxiety, irritability or even paranoia. These mood changes can create problems in relationships and on the job.
Adults can use alcohol legally and people can also use prescription drugs legally as long as they use them as prescribed. Many drugs are illegal, though. People who use illegal drugs, people who drive while under the influence of drugs or alcohol and people who use prescription drugs improperly can face legal problems, including fines, the loss of a driver’s license and jail time. People may also lose their jobs if they fail drug tests at work.