Which Vitamin Deficiency Causes Black Eyes or Easy Bruising?
                                
                                
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                                    5 min read                                
                            
                                While most black eyes result from trauma, unexplained bruising or bleeding beneath the skin's surface can be a key indicator of a nutritional issue. The question of which vitamin deficiency causes black eyes points primarily to a severe lack of vitamin K or vitamin C, which affects blood clotting and vessel integrity, respectively.