Vitamin concentrations 5 years after gastric bypass

Abstract

In patients who underwent gastric bypass surgery, estimated vitamin concentrations were either significantly increased or unchanged up to 5 years after surgery.

Micronutrient Status in Morbidly Obese Patients Prior to Laparoscopic Sleeve Gastrectomy and Micronutrient Changes 5 years Post-surgery

“…Mean haemoglobin levels at 5 years were similar to preoperative values, similar to a large study by Aaseth et al (2015) whereby there was no significant change in haemoglobin levels 5 years after Roux-en-Y surgery compared to preoperative values (n=443)(25). 23.7% of the patients were taking iron supplementation 5 years' post-surgery, where as in the current study only 12% were taking iron supplements.…”

Micronutrient Deficiencies After Bariatric Surgery: An Emphasis on Vitamins and Trace Minerals

“…Vitamin C, or ascorbic acid, is required for proper collagen synthesis. Pre–bariatric surgery deficiency has been reported in up to 43% of obese patients; however, most reports suggest deficiency after bariatric surgery is rare 18 , 54 , 55 . When present, vitamin C deficiency leads to scurvy, which manifests with petechiae, hyperkeratosis, gingivitis, ecchymoses, and/or perifollicular bleeding 56 , 57 .…”

Relationships of serum 25‐hydroxyvitamin D, ionized calcium and parathyroid hormone after obesity surgery

“…Food restriction and reduced intestinal absorption post‐operatively can explain nutritional deficiencies of calcium and vitamin D, and the increase in serum parathyroid hormone (PTH) . Often, PTH remains elevated in spite of supplementation with calcium and vitamin D, implying a negative impact on bone metabolism …”