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Alcohol Intoxication: Symptoms, Effects & Health Risks

Alcohol Intoxication: Acute and Chronic Effects

Alcohol affects every organ system. Effects vary by dose, genetics, tolerance, and context.

Acute Intoxication (BAC-Dependent)

BAC RangeTypical Effects
0.02–0.05%Relaxation, mild euphoria, slight impairment
0.06–0.15%Impaired judgment, coordination, speech; mood lability
0.16–0.30%Severe ataxia, confusion, nausea, blackout risk
>0.30%Coma, respiratory depression, death

Chronic Heavy Use Consequences

  • Liver: Steatosis → hepatitis → cirrhosis → HCC.
  • Brain: Atrophy, Wernicke-Korsakoff, dementia, neuropathy.
  • Heart: Cardiomyopathy, arrhythmias, hypertension.
  • Cancer: Oral, esophageal, liver, breast, colorectal.
  • GI: Gastritis, pancreatitis, malnutrition.
  • Mental health: Depression, anxiety, suicide risk.
  • Social: Relationship, occupational, legal problems.

Seeking Help

NIAAA resources, SAMHSA helpline (1-800-662-HELP), AA, medication-assisted treatment (naltrexone, acamprosate). Early intervention saves lives.

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