Lancet Studies - Gastric Bypass Helps Severely Obese Teenagers
London, UK — Two recent follow-up studies posted in The Lancet Diabetes & Endocrinology have suggested that gastric bypass surgery helps severely obese teenagers lose weight and keep it off, while some patients will likely need further surgery to deal with the complications of rapid weight loss or may develop vitamin deficiencies later in life.
Severe obesity is classified as having a BMI of 40 or over and affects around 4.6 million children and teenagers in the United States, causing poor health and quality of life and cutting life expectancy.
The studies focused on teenagers who had undergone the procedure 5-12 years prior and are the first look at the long-term effects of gastric bypass surgery in teenagers. Though the success rate of the procedure had previously been unknown, thousands of teenagers are offered this treatment each year.
In the first paper, conducted by scientists from Cincinnati Children’s Hospital Medical Center and Baker IDI Heart and Diabetes Institute, researchers looked at 58 American teenagers aged 13-21 who were severely obese and had had gastric bypass surgery.
A year after the surgery, average BMI had lowered from 59 to 36 and eight years later, average BMI was 42, equivalent to a 30% weight reduction. However, almost two thirds of cases remained very obese (BMI over 35) and only one became normal weight at follow-up.
Rates of diabetes in the teenagers dropped from 16 percent to 2 percent, high cholesterol sunk from 86 percent to 38 percent, and high blood pressure decreased from 47 percent to 16 percent as a result of surgery. Some had low levels of vitamin D (78 percent) and B12 (16 percent) and mild anemia (46 percent), which researchers believe could be a result of lower food consumption or impaired gut absorption. Continue>
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