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Long-term Marijuana Smoking Leads To Respiratory Complaints (February 14, 2007) -- Long-term exposure to marijuana smoke is linked to many of the same health problems as tobacco smoke, such as increased respiratory symptoms like cough, phlegm and wheeze, according to a new study by ... > full story

Enhancing Activity Of Marijuana-like Chemicals In Brain Helps Treat Parkinson's Symptoms In Mice (February 8, 2007) -- Marijuana-like chemicals in the brain may point to a treatment for the debilitating condition of Parkinson's disease. In a study to be published in the Feb. 8 issue of Nature, researchers from the ... > full story

Mechanism Of Hallucinogens' Effects Discovered (February 2, 2007) -- The brain mechanism underlying the mind-bending effects of hallucinogens such as LSD, mescaline, and psilocybin has been discovered by neuroscientists. They said their discoveries not only shed light ... > full story

New Dopamine Brain Target Discovered; Potential Breakthrough For Schizophrenia Treatment (January 23, 2007) -- A team of Canadian researchers, lead by Dr. Susan George and Dr. Brian O'Dowd at the Center for Addiction and Mental health, discovered a Gq/11-coupled signalling unit that triggers a calcium signal. ... > full story

100-percent Contamination Of Euro Notes With Cocaine (January 16, 2007) -- An ongoing research project into the detection of illicit drug use has shown that of a sample of bank notes in current circulation in the greater Dublin area -- 5, 10, 20 and 50 Euro denominations -- ... > full story

Prenatal Cocaine's Lasting Cellular Effects (January 13, 2007) -- A recent study by investigators at the Vanderbilt Kennedy Center for Research on Human Development may help explain the long-term behavioral and neurological problems associated with prenatal ... > full story

Methamphetamine Use Increases Risks Of Artery Tears And Stroke (December 29, 2006) -- Methamphetamine use may be associated with increased risks of major neck artery tears and stroke, according to an article published in the December 26, 2006, issue of Neurology, the scientific ... > full story

Increasing Numbers Of California Teens Abuse Over-the-counter Cold Medicine (December 11, 2006) -- The number of reported cases of dextromethorphan abuse in California increased 10-fold between 1999 and 2004, an increase that parallels national trends, according to a report in the December issue ... > full story

Cocaine High Caused By Interference In Neuronal Receiving Stations (December 7, 2006) -- Researchers have found evidence for a fundamental molecular mechanism underlying the hyperactive high of cocaine. In studies with rats, they have traced the effect to interactions between two types ... > full story

No 'Smoking' Gun: Research Indicates Teen Marijuana Use Does Not Predict Drug, Alcohol Abuse (December 4, 2006) -- Marijuana is not a "gateway" drug that predicts or eventually leads to substance abuse, suggests a 12-year University of Pittsburgh study. The study, which found that young men who chose to initiate ... > full story

Steroid Users May Be More Likely To Commit Crimes Involving Weapons, Fraud (November 8, 2006) -- The use of anabolic androgenic steroids may be associated with an antisocial lifestyle involving several types of crime, including weapons offenses and fraud, but did not appear to be associated with ... > full story

High-tech Research Shows Cocaine Changes Proteins And Brain Function (November 2, 2006) -- In the first large-scale analysis of proteins in the brains of individuals addicted to cocaine, researchers have uncovered novel proteins and mechanisms that may one day lead to new treatment options ... > full story

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Psychoactive drug -- A psychoactive drug or psychotropic substance is a chemical substance that acts primarily upon the central nervous system where it alters brain function, resulting in temporary changes in perception, ... > full article

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