Find information on alcohol and illegal drugs, caffeine and nicotine, and information on addiction.
The Drugs You Shouldn't Mix Quiz
More than 1.3 million adults take drugs that shouldn't be mixed. See how savvy you are about avoiding complications at HowStuffWorks. See more »
If You Loved Me You'd Stop and Other Lies of Substance Use: Drug Dependence Quiz
Substance use disorders like drug dependence can cause health problems. Test your knowledge of dependence with this quiz at HowStuffWorks. See more »
Things to Never Mix With Alcohol Quiz
You may be a cocktail master, but do you know which things you should never mix with alcohol? Test your knowledge with this quiz at HowStuffWorks. See more »
Does alcohol affect creativity?
Just how linked are creative genius and a good cocktail? Find out if alcohol affects creativity at HowStuffWorks. See more »
This Is Your Brain on Drugs
Drugs are part of our lives, for better or for worse. Learn about your brain on drugs by taking our quiz at HowStuffWorks. See more »
Is there a link between alcohol and diabetes?
Is it safe to drink alcohol if you have diabetes? Learn about the relationship between alcohol and diabetes to get informed. See more »
What is the difference between binge drinking and alcoholism?
Some binge drinkers are alcoholics, and some alcoholics are binge drinkers, but the two don't totally overlap. Learn more. See more »
Can alcohol cause anxiety?
Does alcohol cause anxiety? Learn about the many ways alcohol can affect anxiety. See more »
How long does alcohol stay in your system?
How long does alcohol say in your system? Find out and learn a little blood alcohol math. See more »
What does alcohol proof mean?
Alcohol proof is always twice the alcohol percentage, right? Wrong. Learn what alcohol proof really means. See more »
Loading more content
Hear and Now: Echidnas Are the Coolest Monotremes Ever
Monster Science Figures Out What That Creepy 'Alien' Facehugger Is
Should You Know if Your Doctor Is a Democrat or a Republican?
See More Headlines »