Diana, I'm sorry for your loss.
I was not on any special eating plan when I got pregnant. And when I was pregnant, I counted myself lucky to keep my dinner down.
I have never heard of PCO being linked to miscarriage, but it wouldn't surprise me if it was. Are you taking a prenatal vitamin? That can take care of a lot of nutritional deficiencies.
Am I right in assuming that you've been checked for a progesterone deficiency? Apparently, that commonly plagues women with this disorder.
This is the info I've found on PCO & miscarriage. It's from
INCIID PCOS FAQs, which I urge you to check out. The site itself has info on infertility in general which you might find helpful.
Quote:
6.1 Is the miscarriage rate higher in women with PCOS?
There does appear to be a higher miscarriage rate in women with PCOS, but the exact reason is still under investigation. According to some studies, the risk of miscarriage in women with PCOS is 45 percent or more. One possibility is that early loss is associated with elevated levels of luteinizing hormone — and women with PCOS often have elevated LH levels — but the reason why it relates to miscarriage is not understood. Another possibility is that elevated levels of insulin or glucose may impede implantation or cause problems with the embryonic development. There is a clear association between uncontrolled blood sugar and pregnancy loss, but the issue of insulin resistance and elevated insulin levels is relatively new and in need of further study. There is a possibility that insulin resistance reduces egg quality. That leads to another possibility — that late ovulation (after cycle day 16) may be associated with poor follicle development and decreased egg quality.
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6.2 Is there anything that can be done to reduce the chance of miscarriage in a woman with PCOS?
The primary way to reduce miscarriage associated with PCOS is to normalize hormone levels. For women with low progesterone levels in the luteal phase, improving ovulation through the use of clomiphene citrate, or injectable FSH or FSH/LH may help the problem. Addressing ovulation issues is more useful than progesterone supplementation as low progesterone is usually a symptom of a problem, such a weak ovulation, rather than the actual cause of miscarriage. Normalizing blood sugar and glucose levels may help, and lead to lower androgen levels, so use of metformin (see next question) during pregnancy is increasing. Most doctors would have patients discontinue use of the glitazones.
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6.3 Can metformin reduce the chance of miscarriage?
It appears that continuing metformin use at least through early pregnancy may reduce the chance of miscarriage, especially in patients with recurrent losses. A recent abstract, "Metformin throughout pregnancy in women with polycystic ovary syndrome reduces first-trimester miscarriage" (CJ Glueck et al, J Invest Med 2000), revealed a group's experience with 59 pregnant PCOS women. Of these, 23 were kept on metformin for the long haul. The other 36 did not continue metformin in pregnancy. This is a very small sample, but the miscarriage rate was 45 percent without metformin and only nine percent with metformin. Chi-square testing showed these rates to be highly significant from a statistical point of view, but their true clinical impact must await further prospective studies. As with any medication used in pregnancy, doctor and patient must assess whether the benefit outweighs any potential risk.
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SO that might be a cause for your miscarriages. I know that diabetes in & of itself negatively impacts fertility, and since you're insulin-dependant I'm certain that factors in there too. Another thing for your doctor to check if he hasn't yet is the thickness of your uterine lining. This is an important part of successfully carrying a pregnancy, but it is sometimes overlooked. If your lining is too thin, implantation cannot occur, and will result in a miscarriage.
Best of luck to you in finding out what the cause is. Please keep us updated!