Impact of Psychotropic Medications on Vitamin Levels After Bariatric Surgery
Overview
This retrospective study evaluated 524 bariatric surgery patients over a mean follow-up of 39.5 months, comparing those on psychopharmacological medications (PD) with controls (CON). Patients on psychotropic drugs showed poorer adherence to vitamin supplementation and more frequent vitamin deficiencies, highlighting the challenges in postoperative care for this subgroup.
Background
Bariatric surgery is the most effective treatment for morbid obesity, improving metabolic health and reducing mortality. However, morbid obesity is associated with high rates of psychiatric disorders, particularly depression, which may affect long-term outcomes after surgery. Adherence to vitamin and mineral supplementation post-surgery is critical to prevent malnutrition, but psychiatric symptoms can impair compliance. This study hypothesized that patients on psychopharmacological therapy post-bariatric surgery have higher rates of vitamin deficiencies due to poorer supplementation adherence.
Data Highlights
Parameter
Psychopharmacological Group (PD)
Control Group (CON)
Number of patients
132 (25%)
392 (75%)
Women (%)
80%
76%
Mean follow-up time (months)
39.5 ± 37.3
39.5 ± 37.3
Mean follow-up visits
4.35 ± 2.8
4.35 ± 2.8
Vitamin D deficiency (<75 nmol/l)
Higher prevalence
Lower prevalence
Vitamin B12 deficiency (<145 pmol/l)
Higher prevalence
Lower prevalence
Vitamin A deficiency (<1.05 μmol/l)
Higher prevalence
Lower prevalence
Vitamin E deficiency (<12 μmol/l)
Higher prevalence
Lower prevalence
Folic acid deficiency (<9.53 nmol/l)
Higher prevalence
Lower prevalence
Key Findings
25% of bariatric surgery patients were prescribed psychopharmacological medications during follow-up.
Patients on psychotropic drugs had significantly higher rates of vitamin deficiencies (A, D, B12, E, folic acid) compared to controls.
Psychopharmacological medication use was associated with poorer adherence to recommended vitamin and mineral supplementation.
Follow-up frequency and surgical procedure types were comparable between groups, indicating differences were not due to these factors.
Psychiatric symptoms such as reduced motivation and cognitive impairment likely contributed to non-adherence.
Clinical Implications
Clinicians should recognize that bariatric surgery patients on psychotropic medications are at increased risk for vitamin deficiencies due to lower supplementation adherence. Enhanced monitoring and tailored support strategies are necessary to improve compliance and prevent malnutrition in this vulnerable subgroup. Multidisciplinary care involving mental health professionals may optimize postoperative outcomes.
Conclusion
Psychopharmacological medication use after bariatric surgery is linked to poorer vitamin supplementation adherence and increased vitamin deficiencies. Addressing psychiatric comorbidities is essential to ensure optimal nutritional status and long-term safety in these patients.
References
Various Authors/Medical University of Vienna/2024 -- The Impact of Psychotropic Medications on Vitamin Levels Following Bariatric Surgery
by Hannes Beiglböck, Alexander Kautzky, Paul Fellinger, Tamara Ranzenberger-Haider, Bianca Itariu, Thomas Wrba, Gerhard Prager, Alexandra Kautzky-Willer, Peter Wolf, Michael Krebs
