The small intestine brought from below is connected to the upper small gastric chamber. With the “Gastric Bypass”, it is aimed to both eat less and decrease the absorption of what they eat. Gastric bypass, which is the most frequently applied method in the USA, tends to decrease proportionally due to the fact that sleeve gastrectomy surgeries are more preferred. Experience shows that the biggest disadvantage of this method is that it is technically very difficult to switch to a second method in case of weight gain after gastric bypass.
Although the need for a second surgery after gastric bypass is less than the sleeve gastrectomy method, the transition to Duodenal Switch, which is the most successful method in terms of both diabetes control and effective and permanent weight loss, is much easier after sleeve gastrectomy.
He completed his medical education at Dokuz Eylul University Faculty of Medicine between 1995 and 2001. He specialized in General Surgery at Ankara Training and Research Hospital between 2001 and 2006. He worked as a General Surgery Specialist at Ankara Training and Research Hospital between 2006 and 2008 and later at Ordu State Hospital between 2008 and 2013. In 2016, he received the title of Associate Professor in the Department of General Surgery, Faculty of Medicine, Izmir University. In 2015, he received the Turkish Surgical Association Proficiency Exam (Board) Certificate of Achievement. He is a member of Turkish Surgical Association, Turkish Colon and Rectum Surgery Association, National Endoscopic Laparoscopic Surgery Association, Bariatric and Metabolic Surgery Association, and Hepatobiliary Surgery Association. Between 2014 and 2016, he taught many undergraduate and graduate courses at Izmir University Faculty of Medicine. He has conducted many national and international studies and these studies have received many citations. Assoc. Prof. Dr. Ömer Yoldaş speaks English fluently. He has two children. Knowledge Domain: Obesity Surgery and Metabolic Surgery, Laparoscopic Reflux Surgery, Laparoscopic Gallbladder Surgeries, Gastric Balloon Application, Gastric filler Application, Laparoscopic Gastric and Intestinal Cancer Surgeries, Haemorrhoid Surgeries, Perianal Fistula Surgeries, Laparoscopic Abdominal and Groin Hernia Surgeries, Breast Cancer Surgeries, Thyroid Cancer and Goitre Surgeries. 
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