General Committee Of Teaching Hospitals And Institutes, Egypt

This study compares two versions of gastric bypass surgery for people who regained weight or didn't lose enough after an initial sleeve gastrectomy. Researchers will track weight loss, quality of life, and food tolerance over 5 years in 240 adults. The goal is to find out if addi…

This study looks at how the size of the tube (bougie) used during laparoscopic sleeve gastrectomy affects outcomes like weight loss and complications. About 100 adults with obesity will be randomly assigned to receive a small (36-Fr) or extra-large (over 40-Fr) bougie. The goal i…

This study tests whether specialized bariatric supplements (Elan Believe, Compass, Supreme) prevent vitamin and mineral deficiencies after weight-loss surgery better than standard over-the-counter multivitamins. Over 600 adults undergoing sleeve gastrectomy, gastric bypass, or on…

This study tests whether a daily multivitamin tablet can prevent vitamin and mineral deficiencies in people using GLP-1 drugs (like Ozempic or Saxenda) for weight loss. These drugs suppress appetite, which can lead to low nutrient intake. The trial will compare a multivitamin to …

This study follows 234 people who regained weight after a sleeve gastrectomy and are now getting a revision surgery. The goal is to compare three procedures—SADI-S, RYGB, and OAGB—to see which leads to the most weight loss, fewest complications, and best nutritional outcomes. Par…

This study looks at stomach tissue from 100 obese patients undergoing weight-loss surgery and compares it to tissue from lean individuals. Researchers are counting immune cells called macrophages and mast cells, as well as blood vessel density, to see if obesity-related inflammat…

This study tests whether giving people special supplements designed for their type of weight-loss surgery can help keep their vitamin levels healthy. After bariatric surgery, the body absorbs nutrients differently, which can lead to both deficiencies and, from too many supplement…