Cat,

If you didn't take B12 prior to the tests, it is doubtful that you are deficient in B12. However, it is not impossible. A smaller percentage of people have normal MMA and Hcy when deficient.

Even if you are not B12 deficient, you may be helped by the larger dose of methylcobalamin. That has been shown to help some who are not B12 deficient in the usual sense.

Your being only 42 has nothing to do with it. Many especially ignorant doctors believe that B12 malabsorption is only in "elderly" people. That is absolutely not true. People much younger than you can and do develop moderate or even severe malabsorption.

Is your 2 1/2 year old healthy otherwise as far as you can tell? Has she been developing fine? Some babies are born with a defect in absorption and/or use of B12, but by 2 1/2 there would usually be severe affects if not treated, and often death.

Fingernails, as with any other part of the body, can be affected by B12 deficiency.

rose