Chronic obstructive pulmonary disease (COPD) is a progressive, respiratory disease characterized by persistent airflow limitation due to damage, caused mainly by smoking. It is the third leading cause of death by disease in the US. COPD primarily affects the lungs but due to the chronic systematic inflammation it also causes metabolic adaptations in the whole body. These alterations lead to an increased nutritional requirement. However, COPD patients often suffer from a comprised nutritional intake.