Bone mineral density monitoring after bariatric surgery is typically performed how often?

• A. Every 6 months
• B. Every 5 years
• C. Never
• D. Every 2 years

Answer: (D)

Bariatric surgery can accelerate bone loss due to rapid weight loss, changes in calcium and vitamin D absorption, and hormonal shifts that affect bone turnover. Because these factors can gradually weaken bone over time, bone density testing is used to monitor for osteopenia or osteoporosis and guide supplementation or treatment.

A baseline DXA scan around the time of surgery is common, and for patients who are asymptomatic with stable results, repeating the scan about every two years is the typical approach. This interval balances the need to detect meaningful changes without over-testing, since bone density changes occur relatively slowly. If there is known osteoporosis, a prior fracture, or ongoing bone loss, more frequent assessment may be appropriate, while testing much less often could miss evolving risk.