What Does Undereating Do to Your Heart?
                                
                                
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                                    4 min read                                
                            
                                According to the National Eating Disorders Association (NEDA), anorexia nervosa, a condition involving severe calorie restriction, carries one of the highest mortality rates of any psychiatric illness, with many deaths resulting from cardiac complications. The question, "what does undereating do to your heart?" reveals a cascade of serious and potentially life-threatening effects on the body's most vital muscle.