Drug use

1440 Findings

Hours of research by our editors, distilled into minutes of clarity.

  • Naltrexone blocks the reward effects of alcohol and opioids

    Naltrexone is used to treat alcohol and opioid dependence, blocking opioid receptors in the brain, reducing cravings, and preventing the euphoric effects of alcohol or opioids. It is nonaddictive and works best as part of a comprehensive treatment plan, including counseling or therapy, to support long-term recovery.

  • 'Susan's Brain': what happens to the brain during addiction

    This engaging animation from Harvard Online breaks down the neuroscience of addiction through the story of “Susan’s brain,” demonstrating how addictive substances hijack normal reward pathways. Through clear visual metaphors and approachable narration, it explains complex brain chemistry in understandable terms.

  • 'The opposite of addiction isn't sobriety—it's human connection'

    This thought-provoking TED talk from journalist Johann Hari challenges conventional wisdom about addiction, with a special focus on his global research investigating its root causes. Through personal stories and scientific evidence, Hari debunks some of the most common myths around addiction.

  • Social support plays a critical role in recovery from addiction

    This engaging TEDx talk from addiction researcher Jacki Hillios explores addiction recovery through a transformative lens and Phoenix Multisport—an innovative program helping people rebuild their lives through active lifestyles. By living out its core message that people are not defined by their disease, the program demonstrates the power of social support in recovery.

  • Fentanyl can be up to 100 times more potent than morphine

    A synthetic opioid, fentanyl is highly addictive and incredibly fast-acting—a fatal dose is equal to a few grains of table salt. Once it enters the body, fentanyl floods naturally occurring opioid receptors, which can cause the body to shut down its breathing reflex, leading to a fatal overdose.

  • Why the human brain loves opioids

    When opioids enter the brain, they dock in receptors, blocking electrical pulses such as those that communicate pain. They also trigger the release of dopamine, a neurotransmitter tied to motivation and associated with stress relief.

  • Opioids mimic naturally produced endorphins to dull pain

    Once in the body, opioids bind to naturally occurring opioid receptors typically used by endorphins to temper pain. They trigger the release of dopamine, a desire-related hormone, and decrease noradrenaline, a neurotransmitter involved in heart and breathing rate regulation, meaning high doses can slow these processes to dangerous levels.

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