Opioids
Natural and synthetic substances acting on opioid receptors, ranging from prescription analgesics to fentanyl analogs.
Latest reporting
Norway's Heroin Program Isn't a Cure — It's the Ceasefire That Makes Recovery Possible
A four-year Norwegian evaluation shows supervised heroin doses aren't the finish line — they're what buys the sickest patients enough stability to get there.
Your Craving Isn't on a Lab Rat's Timetable — And That's Better News Than It Sounds
A 2024 review found zero of 20 human studies backed the 'incubation of craving' model that shapes addiction treatment advice. One woman's real crisis shows what actually predicts a hard month.
Overdose Deaths Are Falling Everywhere in America Except Arizona — and Its Own Settlement Money Is Stuck in Court
The nation just logged a third straight year of record overdose declines. Arizona's death rate climbed 18 percent over the same year and is now roughly double the national average — while the state spent 2026 fighting in court over whether $115 million in opioid settlement money could legally go...
Through eight lenses
Science
Opioids bind to μ, δ, and κ receptors in the central and peripheral nervous system. Agonists (morphine, heroin, fentanyl) produce analgesia, euphoria, and respiratory depression; partial agonists (buprenorphine) and antagonists (naloxone, naltrexone) occupy receptors differently. Fentanyl's potency (~50–100× morphine) reflects receptor affinity, not a different mechanism — which is why overdose reversal still works, just often requiring higher or repeated naloxone doses.
Biology
Acute effects: respiratory depression (the killer), miosis, GI slowdown, analgesia. Chronic use downregulates endogenous opioid production, which is the neurobiology behind withdrawal — real, measurable, not "in someone's head." Long-term health impacts include endocrine suppression, constipation, cardiovascular stress, and (with injection) endocarditis and soft-tissue infections. Fentanyl's pharmacokinetics (rapid onset, short half-life in plasma but redistribution into tissue) explain its overdose profile.
Psychology
Opioid use disorder has the highest bio-genetic contribution of any SUD in twin studies (~50–60% heritability). The "warm blanket" subjective experience — which people in active use describe consistently — reflects μ-receptor activation in regions governing social pain. That's why opioids map so cleanly onto trauma, loneliness, and chronic pain.
Policy
Schedule II (except buprenorphine at III, heroin at I). DEA quota system governs legitimate supply. The 2023 X-Waiver elimination removed the barrier to buprenorphine prescribing — any provider with a Schedule III DEA number can now prescribe. [Telehealth prescribing is extended through 2026](/newsroom/dea-extends-telemedicine-buprenorphine-2026) with permanent 6-month flexibility for buprenorphine.
Overdose Deaths Are Falling Everywhere in America Except Arizona — and Its Own Settlement Money Is Stuck in Court
Sep 15SAMHSA Killed Funding for Fentanyl Test Strips. Then CDC Bragged About Falling Overdose Deaths.
Sep 14The Money Was Supposed to Bury Fewer People. A New Jersey Town Spent It on Cameras That Watch License Plates.
Sep 10
Trends
CDC provisional data shows ~72,000 overdose deaths in the 12 months ending October 2025, a 17% decline from the 2023 peak of ~107,000. Synthetic opioids (fentanyl + analogs) remain in 69–75% of these deaths. Emerging: nitazenes (more potent than fentanyl, naloxone-reversible but may require higher doses) and xylazine (not an opioid, but in the supply — see [SP-15](/newsroom/xylazine-what-it-is-why-it-matters)).
Treatment
[MAT](/newsroom/mat-explained-2026) is the evidence-based standard: buprenorphine, methadone, and extended-release naltrexone all reduce mortality by ~50% vs. non-medication treatment in meta-analyses. Counseling helps but is not required to start MAT. Residential programs, IOP, peer recovery coaching, and 12-step all have roles, but without MAT the evidence for OUD treatment alone is weak.
Harm Reduction
Naloxone saves lives and is now available OTC (Narcan) in most states. Fentanyl test strips, safer-use education, Good Samaritan protections, syringe service programs, and (in some jurisdictions) overdose prevention centers. Harm reduction is not antithetical to recovery — SAMHSA's 2022 harm reduction pillar makes this explicit.
Norway's Heroin Program Isn't a Cure — It's the Ceasefire That Makes Recovery Possible
Sep 16Overdose Deaths Are Falling Everywhere in America Except Arizona — and Its Own Settlement Money Is Stuck in Court
Sep 15SAMHSA Killed Funding for Fentanyl Test Strips. Then CDC Bragged About Falling Overdose Deaths.
Sep 14