A new UC San Diego analysis of 21,189 adults aged 65+ found 11.4% of past-year cannabis users met DSM-5 criteria for cannabis use disorder, with most cases mild.

A five-year trend lens and siloed fentanyl questions in SAMHSA’s 2025 NSDUH blur key opioid metrics, complicating treatment planning and policy for the DMV.

The 2025 NSDUH shows estimated past-month marijuana use among teens aged 12–17 dropped to 5.0% — a multi-decade low — while young adults aged 18–25 trended downward or stable. Here is what the federal data actually says, what it means for the DMV, and why compliant adult-use markets may be part of the reason.