Bariatric Surgery is most often used for Fat Loss.

Bariatric Surgery

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•Last Updated: August 28, 2025

Bariatric surgery is a weight loss procedure performed when diet and exercise strategies haven’t worked for someone with extreme obesity. The surgery involves making changes to the digestive tract that limit how much a person can eat or reduce the body’s ability to absorb nutrients.

Last Updated:August 28, 2025

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Can supplementing with vitamin D improve bariatric surgery outcomes?

In this randomized controlled trial, after a Roux-en-Y gastric bypass, supplementation with 1,800 IU of vitamin D3 per day increased serum vitamin D3 and reduced adiposity more than supplementing with 800 IU per day. However, several methodological issues reduce confidence in these findings.

Do some bariatric surgeries bypass the stomach at the expense of bone health?