How long after taking vitamin D do you see a difference?
                                
                                
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                                    4 min read                                
                            
                                According to research, a significant portion of the global population is deficient in vitamin D.  For those starting supplementation, a common question is: how long after taking vitamin D do you see a difference? The timeframe varies based on the severity of the deficiency, dosage, and individual factors like absorption.