Is Duck Liver High in Vitamin D? Separating Fact from Misconception
                                
                                
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                                    4 min read                                
                            
                                According to the National Institutes of Health, very few foods are naturally rich in vitamin D, with the best sources being fatty fish and fish liver oils. While duck liver contains a host of other valuable nutrients, the claim that it is a significant source of vitamin D requires closer examination.