NICE guidelines say you should be offered a test if you have at least one symptom or sign and one or more risk factors for the condition
Common Causes of B12 Deficiency Not getting enough B12 can happen for several reasons
A class of peptic ulcer and antacid drugs called histamine H2 receptor agonists, including Tagamet, Zantac, and Pepcid Anticonvulsants including phenobarbital, primidone, and phenytoin Bile acid sequestrants including colestipol and cholestyramine, which lower cholesterol Chemotherapy medications like methotrexate Metformin, which is a diabetes drug Proton pump inhibitor drugs used to treat acid reflux, such as omeprazole (Prilosec), esomeprazole (Nexium), or lansoprazole (Prevacid) Tetracycline, an antibiotic Lastly, it is also essential that you communicate with your provider if you have kidney disease or an allergy to cobalt or any other medication, vitamin, dye, food, or preservative
Low levels of B12 are associated with issues such as anxiety, depression, and cognitive decline
Thats why its always important to speak with a qualified provider before getting started