Is Decaf Coffee a Diuretic? Separating Fact from Fiction
                                
                                
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                                    3 min read                                
                            
                                A 2015 study in the American Journal of Physiology-Renal Physiology found that decaffeinated coffee did not produce a significant diuretic effect in healthy adults. This scientific evidence helps to definitively answer the common question: Is decaf coffee a diuretic?