It naturally boosts energy, metabolic processes, and overall well-being
B12 shots can be especially helpful if you are older, do not eat animal products, have conditions that impact nutrient absorption, or take medications that interfere with nutrient absorption
Additionally, the presence of publication bias suggested by Eggers test and funnel plot asymmetry indicates that smaller studies with non-significant results might be underrepresented
Foods like kale, spinach, Brussels sprouts, and parsley, rich in vitamin K
Other groups who may benefit include: Patients following gastric surgery (gastrectomy, bariatric procedures) where intrinsic factor production or absorption sites are compromised Individuals with malabsorption disorders such as Crohn's disease, coeliac disease, or chronic pancreatitis Strict vegans and vegetarians with dietary insufficiency, though oral supplementation is usually tried first Elderly patients with atrophic gastritis or reduced gastric acid production Patients on long-term metformin or proton pump inhibitors, which can impair B12 absorption Individuals with nitrous oxide exposure (recreational or medical), which can cause functional B12 deficiency Diagnosis typically involves serum B12 measurement, with levels below approximately 148 pmol/L (though thresholds vary between laboratories) generally indicating deficiency
Fatigue: People with a B12 deficiency may experience fatigue or lack of energy
