Marijuana use among older adults in the US has reached a new high, with 7 percent of adults aged 65 and over who report using it in the past month, according to an analysis led by researchers with the Center for Drug Use and HIV/HCV Research (CDUHR) at the NYU School of Global Public Health. 

Using a novel lab method they developed, McGill University researchers have identified nine molecules in the blood that were elevated in teens diagnosed with depression. These molecules also predicted how symptoms might progress over time.

The findings of the clinical study could pave the way for earlier detection, before symptoms worsen and become hard to treat.

A new study published in the Journal of Addiction Medicine found that CUD diagnoses rose substantially across all age, race/ethnicity, and comorbidity subgroups nationwide from 2000 to 2022. These diagnoses were consistently higher among people living with HIV, compared to people living without HIV, and people over 65 experienced the greatest relative increase. 

Fatal drug overdoses among youth aged 15 to 24 in the United States involving synthetic opioids alone—not mixed with other substances—soared by 168 percent over the five-year time period of 2018 to 2022, a new study shows. Publishing online May 20 in the journal Pediatrics, the work also found that youth overdose rates and drug combinations varied significantly across age, sex and race/ethnicity.