The prevalence of overweight and obesity is increasing worldwide. Obesity and overweight are caused by several factors, including genetic, metabolic, behavioral and environmental. The increasing prevalence suggests that behavioral and environmental influences play a predominant role, rather than biological changes 1. There are also associations between obesity and several diseases, including diabetes mellitus, hypertension, dyslipidemia, and ischemic heart disease. In addition, higher degrees of obesity (BMI≥35 kg/m 2) are linked to higher mortality rates 1. Although medical programs favor non-surgical methods for weight loss, bariatric surgery is widely accepted as the only known effective treatment for morbid obesity 2. H. pylori are a microaerophilic, gram-negative organisms that leads to many gastroduodenal diseases such as chronic gastritis, peptic ulcer disease, mucosa-associated lymphoid tissue lymphoma (MALT) and gastric cancer. H. pylori are found to be involved with other system affections, such as cardiovascular,