4. Low B12
This brings us nicely on to that point. Having low+ B12 means that you will lack another element necessary to form red blood cells. This then results in the same symptoms as a low iron deficiency but through a different reason.
Again, this is something that can be the result of vegetarianism but actually there are many reasons for low B12. Some people will require regular injections in order to keep their levels at a normal rate. Tingling extremities is one symptom that you have low B12.
Another common deficiency that can cause anemia is low folate.