Misusing alcohol can lead to serious problems. Learn more about the effects of abusing alcohol by taking this quiz.

Drinking can be an expensive habit. While you may not notice a dollar here or two dollars there, consider how much you spend per week and per year on alcohol.

Most adults who drink alcohol are moderate drinkers and are at low risk for alcohol dependence. If you're concerned about drinking use this tool to find out if you have a problem.

Sometimes, people who abuse drugs aren't aware they have a problem. This assessment is for people who regularly use drugs and wonder if they have issues with abuse or addiction.

The holidays can be enjoyed without drinking alcohol. But if you choose to drink, there are responsible ways to consume alcohol.

Many older adults enjoy a glass of wine with dinner or a beer while watching the game on TV. But alcohol can affect older adults differently. Here's what you should know.

When a friend shows signs of abusing alcohol or other drugs, it's hard to know what to do or say. Here's how to help.

A helpful guide to understanding the effects of alcohol, the signs of problem drinking, and how to drink safely.

Knowing about marijuana can help you tell if your child or someone else is using it, and help them to get treatment.

Methamphetamine (meth) is a highly addictive drug. It is related to the legal stimulant amphetamine, but has stronger effects.

Learn more about GHB, a dangerous and addictive illegal drug. GHB produces a feeling of euphoria and hallucinations. It is popular with teens who go to all-night dance parties.

Three kinds of prescription medicines are potentially addictive: opioids, tranquilizers, and stimulants. Here's what you should know.

Once your healthcare provider knows you have cancer, the next step is to find out the grade and stage of the cancer. Stage is a way to note the size of the tumor, and if it has spread. Grade is a way to note how abnormal the cancer cells look under a microscope.

Cocaine use ranges from once in a while to nonstop. There is no safe way to use the drug.

Today there are alternatives to 12-step programs. Some treatment programs teach problem drinkers to reduce their drinking. This approach appeals to people who otherwise might not seek treatment.

LSD, also called acid, is one of the most commonly used hallucinogens or psychedelic drugs.

Drug addiction and alcohol addiction are chronic diseases that can be treated as successfully as many other chronic diseases, including high blood pressure, asthma, and diabetes.

Addiction to drugs or alcohol can happen to anyone of any age, social status, race, or income level. Find out more by taking this quiz.

Substance-use disorder is also called drug addiction. It can break apart families, ruin personal relationships, and make it difficult to keep a job.

Prescription medications can successfully and safely treat mental and physical illnesses. But some medications can be addictive and many can be abused. Being aware of these potential harms can help you prevent them.

Marijuana contains the flowers, stems, seeds, and leaves of the hemp plant. To learn more about marijuana, take this quiz.

Cannabinoid hyperemesis syndrome (CHS) is a condition that leads to repeated and severe bouts of vomiting. It results from long-term use of marijuana.

A surprisingly large number of American teenagers experiment with intoxicating inhalants, resulting in an untold number of deaths. Find out more about inhalant abuse by taking this quiz.

Alcoholic hepatitis is liver inflammation and damage caused by drinking too much alcohol over time.