Which obesity procedure increases bone strength?

One year after having bariatric surgery, patients may have stronger bones, despite a reduction in bone mineral density, a world-first study suggests.
To the researchers’ surprise, the bone material strength index increased by 6.3% on average, from a mean value of 78.1 prior to surgery to 82.0 a year later in 34 patients with morbidly obesity who underwent a Roux-en-Y gastric bypass.
The finding could be clinically relevant as patients with obesity or type 2 diabetes were known to be at increased risk of fracture, despite having normal areal bone mineral density, the Norwegian researchers said.
The risk could be due to reduced bone material strength, they suggested.