Compliance with Vitamin Supplementation in Adolescents Post-Bariatric Surgery

Overview

This study assessed adherence to vitamin supplementation guidelines in adolescents following bariatric surgery by comparing self-reported adherence with objective vitamin D blood levels and explored barriers and facilitators to adherence through qualitative interviews. Findings revealed discrepancies between self-reported adherence and vitamin D status, highlighting challenges in maintaining supplementation in this population.

Background

Bariatric surgery effectively treats severe obesity but often leads to micronutrient deficiencies, notably vitamin D deficiency, due to malabsorption and obesity-related factors. Adolescents undergoing bariatric surgery are at higher nutritional risk than adults, partly due to poorer adherence to supplementation recommendations. Daily multivitamin, calcium, and vitamin D supplementation is recommended post-surgery to mitigate deficiencies, yet adherence remains suboptimal. Understanding adherence behaviors and barriers in adolescents is critical to improving long-term outcomes.

Data Highlights

Key Findings

• Self-reported adherence to vitamin supplementation often overestimated actual adherence as measured by vitamin D blood levels.
• 38% of adolescents had low vitamin D levels 5 years post-surgery, higher than rates reported in adults.
• Common barriers to adherence included difficulty remembering to take supplements and the burden of multiple tablets.
• Adolescents were more likely to adhere to recommendations with immediate consequences than to those with less obvious benefits.
• Preoperative psychosocial preparation may influence long-term adherence to supplementation guidelines.
• Long-term vitamin D deficiency post-surgery may contribute to increased bone mineral density loss in adolescents.

Clinical Implications

Clinicians should be aware that adolescents may over-report adherence to vitamin supplementation after bariatric surgery, necessitating objective monitoring such as vitamin D blood levels. Addressing barriers like forgetfulness and pill burden through tailored interventions and psychosocial support may improve adherence. Emphasizing the long-term skeletal risks associated with vitamin D deficiency can motivate adherence in this population.

Conclusion

Adolescents post-bariatric surgery demonstrate suboptimal adherence to vitamin supplementation, with significant implications for vitamin D status and bone health. Combining objective monitoring with qualitative insights into adherence barriers can guide strategies to enhance supplementation compliance and optimize long-term outcomes.

References

1. AMOS Study Group 2017 -- Outcomes of Bariatric Surgery in Adolescents
2. WHO 2003 -- Adherence to Long-Term Therapies
3. Clinical Guidelines 2018 -- Vitamin Supplementation Post-Bariatric Surgery