Crack cocaine is a highly addictive drug. It is the crystalized version of cocaine. Learn about how the drug effects the brain and why it's so addictive.

Sep 24, 2010 - Kathleen Odenthal

Cocaine is an illegal substance that is widely used and abused in the United States and around the world. Excessive use may cause physical damage or result in death.

Mar 22, 2010 - Kimberly Cole

Powder cocaine is a highly addictive drug with devastating physiological and psychological effects. Both short-term and long-term effects can lead to death.

Feb 19, 2011 - Dani Stern

Crystal meth drug addiction can cause problems such as meth mouth, impotency and psychosis. Even after quitting meth, damage may never heal.

Feb 16, 2011 - Elizabeth Batt

A description of the way the intake of caffeine affects the brain processes, causing alertness and pleasure.

Mar 16, 2007 - Simon Davies

The effects of drug use on the brain causes changes in neurotransmitters. Leading to dependence and addiction by interfering with brain function.

Apr 17, 2010 - Mark Little

An overview of the side effects of citalopram, an antidepressant prescription drug.

Dec 29, 2011 - Rhonda Campbell

There are several different stages the human body goes through to process drugs. These stages are drug absorption, distribution, and elimination.

Jun 27, 2010 - Le Bach Pham

Illegal drugs all pose dangers to a pregnant woman and baby. Legal substances, even medical drugs - both prescription and over-the-counter, can be very harmful as well.

Feb 1, 2009 - Nelson Acquilano

Bath salts are making headlines as a new street drug that has been reported in many teen arrests across the US.

Oct 31, 2011 - Kelly Pfeiffer

Practice stress control. Overcome stress with very simple and natural techniques. Learn how to become stress free now.

Dec 12, 2009 - Jacob Stevenson

Neurotoxicologists have used neurotoxicants to help in understanding the way the nervous system works.

May 4, 2010 - Uni Blake

Nearly 25 million people worldwide are estimated to have used amphetamines and methamphetamines making it the most used illicit drug next to cannabis.

Sep 30, 2010 - Jill Douglass

Substance abuse and addiction reflect a high degree of psychological and physiological dependence, grooved in biochemically throughout the body and brain.

Apr 8, 2011 - Tiyana Webb

Holistic addiction programs can allow a more complete recovery, by addressing social, emotional and physical issues surrounding the client's addiction.

Apr 27, 2009 - Lisa Ann Schleipfer

Mouths are used for eating, drinking, sucking and kissing, and diseases and conditions that affect them can cause great discomfort and embarrassment.

Aug 1, 2010 - Debbie Roome

The side-effects of high altitude on the unsuspecting tourist

Mar 2, 2012 - Paul Lynch

Former N.Y. Mets pitching wonder, Dwight Gooden's drug use has kept him in jail and out of the Baseball Hall of Fame, but Cooperstown may reconsider after "

Aug 7, 2011 - Dale Ray

Oxytocin is a feel good hormone. It is a natural hormone that has a profound effect on how you feel. Increase you oxytocin levels, learn how here.

Dec 4, 2011 - Sandra Markcrow

Nitrous oxide, commonly referred to as laughing gas, may be reintroduced to mothers in labor as an alternative anesthetic option.

Feb 14, 2011 - Lauren Liberati