In addition to impacting the speed of absorption of oral supplements, the digestive process also affects the extent of absorption, with 40%-50% of low-dose B12 vitamins being absorbable
What the Published Data Shows Across the research literature, B12 deficiency rates after bariatric surgery fall in the following ranges (3): Roux-en-Y gastric bypass: approximately 2% to 80%, depending on follow-up duration and supplementation Sleeve gastrectomy: 0% to 36.4%, with deficiency often emerging up to two years post-surgery Biliopancreatic diversion with duodenal switch: highest rates, often requiring lifelong parenteral supplementation Weight loss medications: up to 2.6% incidence within one year of treatment These are wide ranges because research has pooled studies with very different follow-up windows and supplementation regimens
These joint effects, less hunger, slower digestion, and better glycemic control fuel weight loss through energy intake reduction and substrate utilization optimization
[56] The presence of antibodies to gastric parietal cells and intrinsic factor is common in PA
Texture, fine lines, and firmness change gradually, so baseline photographs provide a more reliable comparison than daily observation