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Re: An Answer to my own QuestionFrom: =?iso-8859-2?q?Zalányi Sámuel?= (anonymous@obgyn.net)Tue, 30 Jan 2001 17:55:53 +0100 (MET DST)
Hi Jenny, I am a (Hungarian ) Ob/Gyn, I have a Ph.D. in reproductive endocrinology, besides I haven't forgotten what I have learned about vitamins. Thereforre I copy for you two earlier letters on the same topic. You should also show it to the pathologist. 1) Glucophage is suspected to decrease the absorption of folic acid (a member of the vitamin B group). I see no reason in taking B12 orally because it is not absorbed from the gastrointestinal tract. I hope this helps 2) Congratulations to your explanation of IR and PCOS, but don't mess up with vitamins and supplements. I have read references on metformin blocking the absorption of folic acif, all right (though I would like to see the original publication). But confusing folic acid with B12 is a mistake. B12 is not absorbed from the gastrointestinal system, so there is no use of taking it as a pill (you had it INJECTED earlier). Prenatal viamtins are a big delusion and a dangerous one at that. The only vitamin proven to reduce the risk of certain birth defects is folic acid (800 mcg/day is enough to supplement the habitual western diet). Unfortunately most prenatal vitamins also contain vitamin A which is KNOWN TO CAUSE certain abnormalities if taken before W12 of pregnancy. Therefore I strongly advise my patients against taking vitamin complexes before W12. Folic has to be taken srtictly after conception (or prophylactically before). Combining more products is definitely harmful. 3) New: vitamin A is necessary for the heatlhy development of skin and its appendages (nails, hair, sebaceous glands etc), also for ther normal functioning of the retina (its lack causes twilight blindness). Vitamin E can also help maintaining skin and accessories. I hope this clarifies the misunderstanding Sam (Ob/Gyn, RE)
> I don't know who you are, but I'll take the info from a doctor I know,
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