Long-term prevalence of vitamin deficiencies after bariatric surgery: a meta-analysis
Chen L, Chen Y, Yu X, Liang S, Guan Y, Yang J, et al.
Published in Langenbecks Arch Surg, Vol. 409 (1), pp. 226
Methodology
Systematic review and meta-analysis of 54 clinical studies reporting vitamin deficiencies at least 5 years (5-17 years) after bariatric surgery, with subgroup and meta-regression analyses.
Key Findings
Long-term deficiency rates were vitamin D 35.8%, vitamin E 16.5%, vitamin A 13.4%, vitamin K 9.6% and vitamin B12 8.5%. Vitamin A and folate deficiency became more common with longer follow-up. Vitamin A deficiency was reported far more often in European studies (25.8%) than in American ones (0.8%).
Conclusions
Fat-soluble vitamin deficiencies, including vitamin A, are common long after bariatric surgery and vary by procedure, region and follow-up time, so supplement programmes need tailoring.
Limitations
Mostly observational cohorts with differing deficiency thresholds, procedures and supplement regimens; regional differences may reflect testing practice.
Related Health Concerns
Study Details
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This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.