Common Symptoms of a Vitamin B12 Deficiency If you think you may be low, watch out for these symptoms: Feeling tired, fatigue and weakness Loss of appetite Constipation Weight loss Megaloblastic anemia Numbness and tingling Poor balance or coordination Confusion Memory loss Depression (21) Soreness of mouth and/or tongue (22) Be aware that many symptoms of B12 deficiency overlap with symptoms of other health conditions, so it's important to see your doctor for a definitive diagnosis
A practical meal framework is often 25-35 g protein at main meals plus one or two 15-25 g backup snacks, adjusted to body size, kidney health, symptoms, activity, and care-team guidance
Also seek urgent evaluation for back pain with right upper quadrant abdominal pain, which may suggest gallbladder disease
J Thorac Cardiovasc Surg 125(6):1328-35, 2003
painful resisted wrist extension with elbow extended, passive wrist flexion with ulnar deviation