Bariatric Vitamin Guides
Research-backed articles for bypass, sleeve, and mini-bypass patients
After bariatric surgery, whether gastric bypass or gastric sleeve, vitamins are a lifelong requirement, not a choice. These guides are written by David Gans, a gastric bypass patient since January 2024 who lost 231 lbs, to help WLS patients understand exactly what their body needs based on their surgery type.
The guides cover bypass vs sleeve vitamin differences, the most common nutrient deficiencies after weight loss surgery, and how to find the cheapest manufacturer-labeled bariatric multivitamin. Educational references to ASMBS guidance are based on the 2016 Integrated Health Nutritional Guidelines and are updated regularly.