What Deficiency Causes Circles Under the Eyes?
                                
                                
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                                    4 min read                                
                            
                                According to a 2014 study published in the *Indian Journal of Dermatology*, about half of the participants with dark undereye circles also had iron deficiency anemia. While genetics and fatigue are common culprits, certain nutritional deficiencies can significantly impact the appearance of periorbital hyperpigmentation.