Good article. I'm going to have to get tested for my nutrient levels before we start trying to get pregnant. I don't eat meat, dairy or eggs so I take a tsp of spirulina a couple times a day to get my B12.
Aside from the reasons stated in the article, your B12 levels can also be affected by various health conditions, medications, etc. Having lived with two or three different reasons for B12 issues for several years now, it's really important to bug your doctor about these things and ask for testing. I test normal in all my blood tests for anemia, etc, but STILL have persistent issues related to less than optimal B vitamin levels.
I was diagnoses with B12 deficiency about a year ago. I knew something was wrong for a long time. The doctor tested for Iron deficiency (which I have but was managing with supplements), thyroid issues, diabetes---finally figured out it was a low B12. It was amazing the difference it made once I started getting weekly shots, within 2 months my muscles stopped aching, the tingling in my arms and hands had subsided. I am still on the low side and I may always be.
This is scary. I was recently diagnosed with a B-12 deficiency, in the form of "pernicious aneamia", which means that it's a problem with absorption. So no matter how much I eat of the stuff it won't go in! I'm on a life time course of injections once every 3 months, not too scary and apart from that it doesn't have any impact. But this article shows that there are bigger impacts.
It was only by a chance test that the Dr found my deficiency, it can be years before any symptoms present. If you are thinking of getting pregnant, I would ask that you get your Dr to check.
I was diagnosed a year ago with having Vitamin B12 deficiency. While I was pregnant, they checked my levels and they were normal so I was told I could stop taking the supplements. A few weeks later, I miscarried. My daughter had an extra set of chromosomes. Could this be from not having enough B12 while I was pregnant?
Interesting article. I wonder if the results have to do with the relationship between B-12 and folic acid/folate (if women who had lower levels of B-12 also had lower levels of folic acid). Another good reason to eat healthily!
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