A patient undergoing surgery has only a few concerns regarding the success of the operation. The main priority is the effectiveness of the operation itself. Equally fundamental for the patient, however, is the guarantee of anesthesia. The precise methods of applying anesthesia vary depending on the physiological conditions of each patient. The use of clinical anesthesia on obese people is particularly complex and presents dangers for patients. As complications arising from the use of anesthesia on the obese continue to occur, mandatory measures such as additional training of anesthesiologists should be implemented in all perioperative phases to reduce risks for this growing patient population. Obesity is now considered a global epidemic, with numbers particularly concentrated in the United States. It is estimated that more than one-third of U.S. adults were obese in 2011–2012 (National Center for Health Statistics, 2013). Due to the increasing prevalence of the epidemic, anesthetists must manage a significant number of clinically obese patients. A wide range of physiological changes are associated with obesity, including cardiac, respiratory, and metabolic functions (Leykin, v). Areas of concern for anesthesiologists when operating on obese individuals can be divided into three perioperative phases: preoperative, intraoperative, and postoperative. Preoperative concerns focus primarily on each patient's specific medical conditions. Since anesthesia is closely tailored to the specific needs of the patient, it is of paramount importance that all factors are taken into account before surgery. This is especially true for the obese, who are at risk of suffering from comorbidities (more than one disease). Metabolic syndrome, a collective set of…… half of the document……1 (2012): 81-88. Web.Myatt, John and Kevin Haire. "Airway management in obese patients". Current Anesthesia and Intensive Care 21.1 (2010): 9-15. Web.Neligan, Patrick J. “Metabolic Syndrome: Anesthesia for Morbid Obesity.” Current Opinion in Anesthesiology 23.3 (2010): 375-83. Web.Novation. Bariatric Supplies Market Research Report. Rep. Np, November 2012. Web.Porhomayon, J., P. Papadakos, and ND Nader. “Alterations of respiratory physiology in obesity for intensive care physicians in anesthesia.” HSR Proceedings in Intensive Care and Cardiovascular Anesthesia 3.2 (2011): 109-18. Web."Prevalence of obesity among adults: United States, 2011–2012." National Center for Health Statistics. Np, nd Web. .Stone, Julian and William Fawcett. Anesthesia in brief. Np: Wiley, 2013. Print.