A new research has found that marijuana use along with cognitive dysfunction in people with HIV infection who have an alcohol or other drug use disorder.

The researchers from Boston University School of Public Health (BUSPH), Boston University School of Medicine (BUSM), and Boston Medical Center (BMC) did not find effects of lifetime cumulative exposure, the study comes up with the more frequent current marijuana use was related  to a measure of cognitive dysfunction on the Medical Outcomes Study HIV Health Survey cognitive function scale.

One of the Co-author Richard Saitz has said that people with HIV infection have various reasons to have cognitive dysfunction, from the virus itself to medications for HIV infection and related conditions, particularly as they age. "They also have symptoms like chronic pain and mental health symptoms, and use of marijuana, medically or recreationally, may seem like an option to consider. But at least among people with substance use disorders, it appears to have detrimental effects on cognitive function." 

The researchers also organized the cross-sectional regression analyses on 215 HIV-infected adults diagnosed with substance disorder, based on the current Diagnostic and Statistical Manual of Mental Disorders (fourth edition). And found no effects detected of alcohol or past marijuana exposure on cognitive function, nor did there appear to be any evidence for synergistic effects on cognition.

moreover, neither alcohol nor marijuana appeared to affect simple tests of memory or attention. The authors postulated that such effects were not detected, even though they are expected at the least with heavy alcohol use, because of multiple other exposures and comorbid health conditions that participants had.

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