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
Animal-based products like meat, eggs, dairy products, and fish are excellent sources of vitamin B12
B12 injections deliver methylcobalamin, the metabolically active form of vitamin B12, directly into muscle tissue
How Often Can You Take B12 Injections
It may also enhance the activity of certain immune cells, which may ward off viruses and chronic disease such as cancer, according to a 2020 review in the medical journal, Nature (2)