But does vitamin B12 give you energy regardless of the cause
Some people have a much higher chance of developing B12 deficiency, and understanding these risk factors helps us catch problems early
Other potential contributing factors include infections and autoimmune diseases such as rheumatoid arthritis and lupus
Additional at-risk groups include: Vegans and strict vegetarians , who may have low dietary B12 intake People with autoimmune conditions , including pernicious anaemia or type 1 diabetes Individuals with gastrointestinal conditions such as Crohn's disease or coeliac disease, which impair nutrient absorption People who have undergone bariatric surgery , which can significantly reduce B12 absorption Long-term users of proton pump inhibitors (PPIs) or H2-receptor antagonists , which reduce gastric acid and impair B12 release from food Those with a family history of either pernicious anaemia or diabetes For these groups, simultaneous monitoring of B12 status and glycaemic markers is particularly important to avoid diagnostic errors
B12 shots for malabsorption or dietary restriction Vegans, vegetarians, older adults, and people with GI conditions (Crohn's disease, celiac disease, pernicious anemia) commonly have inadequate B12 absorption
