Dizziness
If you are feeling dizzy and there is no specific cause, this may be an indication that you have a vitamin B12 deficiency. You may notice this dizzy feeling if you go up a set of stairs or if you sit or stand too quickly. It will usually come on strong and then pass quickly. If your doctor cannot connect dizziness to something specific, they may prescribe a blood test to find out if you are B12 deficient.
Depression and Anxiety
If you want to have good mental health, you need the right amount of vitamin B12 in your body. Those who have an inefficient amount of this vitamin may experience depression and anxiety with different levels of intensity. The cause of anxiety or the reason for the feelings of depression may have been resolved or have passed, yet a person with a vitamin B12 deficiency will continue to experience the negative feelings.