Does a Standard Drink Contain 30 Grams of Alcohol? The International Discrepancy Explained
                                
                                
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                                    4 min read                                
                            
                                A 2016 study published in the journal *Addiction* revealed that standard drink sizes vary wildly across the world, with definitions ranging from 8 to 20 grams of pure alcohol. This major inconsistency directly addresses the question: does a standard drink contain 30 grams of alcohol?