A recent study examined injection risk behaviors among heroin injectors in the Colombian cities of Medellín and Pereira to explore the implications for possible increased HIV transmission within PWID.
The age at which an adolescent begins using marijuana may affect typical brain development, according to researchers at the Center for BrainHealth at The University of Texas at Dallas. In a paper recently published in Developmental Cognitive Neuroscience, scientists describe how marijuana use, and the age at which use is initiated, may adversely alter brain structures that underlie higher order thinking.
Washington University School of Medicine researchers report an estimated 12.5 percent of adults living in the United States use marijuana, but their research also shows that the rate of pot use did not double from 2002 to 2013 -- as had been reported in the fall -- but instead increased by about 20 percent. Meanwhile, the rate of problems related to the drug has remained steady.
Research from the University of Rochester finds that caring for others dips during adolescence. But when young people feel supported from their social circles, their concern for others rebound.
Two secrets of one of the brain's most enigmatic regions have finally been revealed. In a pair of studies published in Cell and Neuron, scientists from the Gladstone Institutes have discovered a specific neural circuit that controls walking, and they found that input to this circuit is disrupted in Parkinson's disease. The research reveals two potential new targets to treat movement disorders.
A new study provides some of the first evidence about patterns of marijuana use in states that have legalized medical marijuana. It finds that medical marijuana users are more likely to vaporize or consume edible forms of the drug than recreational users. Researchers also found that 41 percent of people reported having used marijuana recreationally at least once, while only about 7 percent reported using marijuana for medical purposes.
Researchers at Columbia University Medical Center (CUMC) and New York State Psychiatric Institute have found that while cigarette smoking rates have declined among younger people in the United States, those who do smoke are more likely to have a psychiatric or substance use disorder compared with those who began smoking in earlier decades.
Researchers at University of Florida Health have discovered the mechanics of how dopamine transports into and out of brain cells, a finding that could someday lead to more effective treatment of drug addictions and neurological disorders such as Parkinson's disease.
When compared with their heterosexual peers, sexual-minority youth score lower on key indicators of positive youth development -- and those disparities may be due in part to more bullying of these adolescents, University of Pittsburgh Graduate School of Public Health researchers have found.
In a first of its kind study, researchers followed meth-exposed children to age 7.5 and found more supportive home environments could make a difference in their behavior and emotional control.