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What are the possible dangers of gastric bypass surgery?

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Possible dangers of gastric bypass surgery include wound infections, ulcers, food intolerance, bleeding and digestive problems, states Mayo Clinic. Around 1 to 5 percent of people may develop serious complications, such as clots in the lungs, heart attack and leaks in the gastrointestinal system after gastric bypass surgery, notes WebMD.

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Infection after gastric bypass surgery often occurs during or soon after surgery and affects 1 in 20 people. Blood clots, which often occur in the legs or lungs, affect 1 in 100 people, reveals NHS Choices. Excess skin may also occur 12 to 18 months after gastric bypass surgery. It occurs as folds of skin around the tummy, limbs, hips and breasts. Excess skin makes people vulnerable to infections and rashes because it can be difficult to clean, states NHS Choices. However, it can be removed by cosmetic surgery.

Gallstones develop in around 1 in 12 people after gastric bypass surgery. In most people, gallstones show no symptoms, but they may inflame and irritate the gallbladder, causing nausea and vomiting, pain in the abdomen and jaundice, notes NHS Choices. Some people also develop psychosocial problems, such as relationship problems after gastric bypass surgery.

Stomal stenosis is a complication of gastric bypass surgery that affects one-fifth of people. It occurs when the connection between the stomach and the small intestine becomes blocked by food, leading to persistent vomiting. To avoid setomal stenosis, people should take small chunks of food, chew well and avoid drinking while eating, discloses NHS Choices.

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