Hi,
there is a well researched link between depression and low b12. I was very depressed, even tried to kill myself -- but then I finally got diagnosed with low b12 because my mother had pernicious anemia... And since i've had replacement therapy my life is so different.
I didn't get the replacement b12 therapy in time to keep from having permanent nerve damage though...
So it's important to learn about b12... Click on fingernails at my sight... There's a lot of information on that page...
Health-boundaries-bite.Com/fingernails.Htm
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your fingernails reflect your health --
learn what warning signs to look for --
karen kline