Long-term Adverse Effects After Bariatric Surgery on Bone Density

Long-term Adverse Effects After Laparoscopic Sleeve Gastrectomy and Roux en Y Gastric Bypass (Part A)

The goal of this trial is to examine long-term effects of laparoscopic gastric bypass (LRYGB) and sleeve gastrectomy (LSG) on bone mineral density, fracture risk, and body composition ≥ 5 years post-surgery.

Bariatric surgery shows impressive results in terms of weight loss and resolution of comorbidities. Still, there are questions as to the frequency of long-term adverse effects: data on alterations in bone health are missing,

The goal of this trial is to examine long-term effects of laparoscopic gastric bypass (LRYGB) and sleeve gastrectomy (LSG) on bone mineral density, fracture risk, and body composition ≥ 5 years post-surgery.

Inclusion Criteria:

• Patients who received laparoscopic sleeve gastrectomy (LSG) or laparoscopic gastric bypass (LRYGB) ≥ 5 years ago as a primary bariatric procedure will be eligible for this study.

Exclusion Criteria:

• LSG or LRYGB as a secondary bariatric procedure (e.g. after gastric banding), patients receiving secondary bariatric operation after LSG resp LRYGB (e.g. biliopancreatic diversion), pregnancy (due to radiation exposition)