Posted by Cairo on January 28, 2005, at 11:13:07
We just received lab results on my teenager who has been complaining of fatigue. SMAC, thyroid, folic acid, vit. E, ANA, lead, and iron indices came back normal. Only things that stood out were ferritin being low normal (20 ng/ml) and B-12 being high (1456 pg/ml; normal=211-911). Could high B-12 mean anything? I searched on Google and found only a few sites than even mention B-12 overdose with the following symptoms:
"Can cause folic acid-related anemia if low,
numbness or tingling in right arm or right side
of face, anxieties, panic-anxiety attacks, heart
palpitations, hyperthyroid, optic nerve atrophy
(in someone with Leber's disease), insomnia,
may worsen symptoms of mitral valve prolapse"The anxiety, panic, and insomnia stood out as she has these.
She takes a B-50 supplement. Should I be concerned about the high B-12 level in terms of toxicity? Or could it indicate something else such as reduced B-12 in the CNS (it not crossing the BBB and serum levels go up)?
Cairo
poster:Cairo
thread:449152
URL: http://www.dr-bob.org/babble/alter/20050101/msgs/449152.html