A 2023 study found that vitamin B12 deficiency is associated with higher body weight and fat mass, according to Healthline
Similarly, older adults, those with digestive disorders like Crohns disease or celiac disease, and individuals whove undergone weight-loss surgery may struggle with the bodys ability to absorb B12 from food
Vitamin B12 Side Effects Stomach: Causes and Management Vitamin B12 (cobalamin) is an essential nutrient vital for red blood cell formation, neurological function, and DNA synthesis
Fatigue and weakness are often the first indicators that B12 levels are dropping
Sitting down and hydrating usually helps
Treatment plans may vary from one injection per month to several over a span of weeks, depending on the condition