The TV star said someone assumed that she did gastric bypass. Radio and television presenter Anele Mgudlwa recently reacted to claims that she had gastric bypass surgery. Gastric bypass is a type of weight-loss (bariatric) surgery that helps people lose weight by changing how the stomach and small intestine handle food. “There’s a lady that thought, that assumed that I did gastric bypass and that’s how I lost the weight. While Mgudlwa has not publicly said how she lost the weight, she said she has no issue with people who choose to undergo weight-loss surgery.