Why Alcohol Creates Conflicting Effects on the Mind and Body
This article explores the complex pharmacological impact of alcohol, described by experts as 'pharmacologically promiscuous' due to its ability to simultaneously stimulate reward pathways, dampen threat signals, and alter mood. Unlike other substances that target specific systems, alcohol affects all major neurotransmitters, including dopamine, serotonin, glutamate, and GABA. Initially, it enhances GABA and suppresses glutamate, leading to relaxation and reduced inhibition by affecting the frontal cortex. As consumption increases, it impairs deeper brain regions like the cerebellum and brainstem, causing physical coordination issues and potential respiratory failure. The text also explains the physiological basis for post-consumption anxiety and depression, attributing them to a rebound hyperexcitation state where stress hormones remain elevated after alcohol leaves the system.
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Why Alcohol Creates Conflicting Effects on the Mind and Body
This article explores the complex pharmacological impact of alcohol, described by experts as 'pharmacologically promiscuous' due to its ability to simultaneously stimulate reward pathways, dampen threat signals, and alter mood. Unlike other substances that target specific systems, alcohol affects all major neurotransmitters, including dopamine, serotonin, glutamate, and GABA. Initially, it enhances GABA and suppresses glutamate, leading to relaxation and reduced inhibition by affecting the frontal cortex. As consumption increases, it impairs deeper brain regions like the cerebellum and brainstem, causing physical coordination issues and potential respiratory failure. The text also explains the physiological basis for post-consumption anxiety and depression, attributing them to a rebound hyperexcitation state where stress hormones remain elevated after alcohol leaves the system.
The Guardian