If you have a deficiency, you are beyond treating with food. You would need oral or shot supplements. You can read up on it on wiki:
http://en.wikipedia.org/wiki/Vitamin_B12_deficiency
Like I said, my friend had almost exactly what you are describing with the numbness. She didn't have many other symptoms as I recall.
I just looked it up on the NHS website and OMG i have so many of these symptoms.
The poor resistance to infections - I have had a ton of skin infections in the past year. I have one on my hand right now, have had one under the lip, in my nose (that one just came back last week)
Pale skin with a Lemon color tint - I told my mom that one on the phone and she gasped. I have had Yellowish skin for a long time, and I'm the only one in my family who does. Vincent's family always jokes about it.
Tiredness and Muscle Weakness are two recurrent problems with me. Then add in the numbness.
From wiki: 4. (I have this now) Sores at the corners of the mouth, sometimes extending along the edge of the lip. These are raw spots, not blisters, and they tend to come and go.
6. Shortness of breath, but without chest pain. This can occur when walking just a few yards.
8. Facial pain, usually on only one side of the face at a time.
There are more, but I won't bore you... I am feeling very hopeful. You may be my guardian angel.
Will buying B12 vitamins be sufficient? I want to speak to my doctor about it next week, but for now I'm wondering if I should go pick some up.