According to the Academy of Nutrition and Dietetics Evidence Analysis Library (2012), critically ill adult patients who receive EN experience less septic morbidity and fewer infectious complications than patients who receive parenteral nutrition. EN is also significantly less costly than parenteral nutrition. However, EN has not been proven to impact mortality, and there is little evidence that EN, when compared to parenteral nutrition, reduces length of hospital stay (Academy of Nutrition and Dietetics Evidence Analysis Library, 2012). More high-quality trials are needed to determine whether EN and parenteral nutrition ultimately reduce morbidity or simply improve body weight.