Related Experiment Video
Updated: Feb 6, 2026

Author Spotlight: Demonstrating Systematic Endobronchial Ultrasound to New Endoscopists
Published on: August 11, 2023
Does Bariatric Surgery Cause Vitamin A, B1, C or E Deficiency? A Systematic Review
Carrie-Anne Lewis1,2, Susan de Jersey3,4, George Hopkins5
1Department of Nutrition and Dietetics, Royal Brisbane and Women's Hospital, Butterfield Street, Herston, Queensland, 4029, Australia. carrie-anne.lewis@health.qld.gov.au.
Background:
The restrictive and/or malabsorptive nature of bariatric surgery may increase the risk for micronutrient deficiencies. This systematic review aimed to identify and critique the evidence for vitamin A, B1, C or E deficiencies associated with bariatric surgery.
Methods:
This review utilised PRISMA and MOOSE frameworks with NHMRC evidence hierarchy and the American Dietetic Association bias tool to assess the quality of articles.
Results:
Twenty-one articles were included and once critiqued all studies were of level IV grade and neutral or negative in quality. The relevance of measuring micronutrient supplementation and inflammatory markers for validity of serum vitamins is absent within the literature.
Conclusions:
Future research is needed to investigate the risk of deficiency for these procedures with focus on confounders to serum micronutrients.
Related Concept Videos
Vitamins
Review and Preview
Percentiles are a type of fractile that partition data into...
Review and Preview
Random and Systematic Errors
Systematic Sampling Method
Systematic sampling is one of the simplest methods...
Propagation of Uncertainty from Systematic Error

