opioids opioids

These PET scans show the normal distribution of opioid receptors in the human brain. A new study suggests ketamine may activate these receptors, raising concern it could be addictive. Philippe Psaila/Science Source hide caption

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Philippe Psaila/Science Source

A police officer speaks to a man on New Haven Green, where more than 70 people fell ill from suspected drug overdoses on Wednesday in New Haven, Conn. Bill Sikes/AP hide caption

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Bill Sikes/AP

Bea and Doug Duncan outside their home in Natick, Mass. The coaching they got from the Community Reinforcement and Family Training program, they say, gave them tools to help their son Jeff stick to his recovery from drug use. He's 28 now and has been sober for nine years. Robin Lubbbock/WBUR hide caption

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Robin Lubbbock/WBUR

A homeless man in Denver draws heroin into a syringe. Treatment centers in the city say patterns of drug use seem to be changing. While most users once relied on a single drug — typically painkillers or heroin or cocaine — an increasing number now also use meth. Andy Cross/Denver Post via Getty Images hide caption

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Andy Cross/Denver Post via Getty Images

A Surge In Meth Use In Colorado Complicates Opioid Recovery

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A drug user prepares a hit of heroin inside VANDU's supervised injection room. Rafal Gerszak for NPR hide caption

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Rafal Gerszak for NPR

Watchful Eyes: At Peer-Run Injection Sites, Drug Users Help Each Other Stay Safe

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At safe injection sites like Insite, in Vancouver, Canada, drug users can inject drugs under the watch of trained medical staff who will help in case of overdose. Elana Gordon/WHYY hide caption

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Elana Gordon/WHYY

Cities Planning Supervised Drug Injection Sites Fear Justice Department Reaction

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Shannon Hubbard has complex regional pain syndrome and considers herself lucky that her doctor hasn't cut back her pain prescription dosage. Will Stone/KJZZ hide caption

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Will Stone/KJZZ

Patients With Chronic Pain Feel Caught In An Opioid Prescribing Debate

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Any amount of opioid use was associated with a higher risk of arrest, parole or probation according to a new study. Marie Hickman/Getty Images hide caption

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Marie Hickman/Getty Images

Main Street in McArthur in Vinton County, Ohio. Though the opioid crisis endures in Ohio, the problem is now compounded by the resurgence of methamphetamine addiction. Arezou Rezvani/NPR hide caption

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Arezou Rezvani/NPR

Teachers See the Effects of the Opioid Crisis On Children

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