Gugu Gumede On How Doing the Gastric Sleeve Surgery Has Impacted Her Life 2 Years On. It has been two years since Gugu Gumede plucked up the courage to do a gastric sleeve surgery. Gugu has always been open about her gastric sleeve surgery, and the results that she gets to enjoy. She has just taken to social media celebrating two years post her gastric sleeve surgery. “I cannot believe it has officially been two years since having my gastric sleeve surgery!