Common factors that can impair absorption include: Age-related decrease in stomach acid production Certain medications including proton pump inhibitors and metformin Gastrointestinal conditions like Crohn's disease or celiac disease Vegetarian or vegan diets (B12 is primarily found in animal products) Bariatric surgery or other digestive tract surgeries Pernicious anaemia (autoimmune condition affecting intrinsic factor) This is where vitamin B12 injections offer a significant advantagethey bypass the digestive system entirely, delivering this crucial nutrient directly to your bloodstream for immediate availability to your cells
Conduct multicenter, double-blind RCTs establishing BMI-stratified dose-response relationships and optimal dosing regimens
doi: 10.1007/978-1-0716-4220-7_13
By activating these receptors in the brains satiety centers (like the area postrema), it promotes feelings of fullness, reduces food intake, and helps stabilize post-meal blood sugar spikes, making it a promising candidate for weight management, particularly in combination with the GLP-1 receptor agonist semaglutide (marketed as CagriSema)
Some patients may benefit from a single injection, while others may require additional treatment