Because symptoms of vitamin B12 deficiency are nonspecific, they may be overlooked or misdiagnosed. If you’re experiencing any of the symptoms, it’s important to discuss them with your healthcare provider / GP. This is particularly pertinent if you: Follow a restrictive diet, such as a vegan diet. Are aged 60 or above. Are pregnant or breastfeeding. Have a medical condition that can deplete B12 levels. Take medications that can deplete B12, like metformin or proton pump inhibitors. In addition to assessing your symptoms and conducting a physical examination, a healthcare professional can confirm or rule out B12 deficiency through various blood tests. If diagnosed with low B12 levels, your healthcare provider will recommend the most suitable treatment plan.