FAQ: How Much Vitamin B12 Is Safe During Pregnancy?

How much B12 is safe while pregnant?

Pregnant women need 2.6 micrograms per day of vitamin B12. Good food sources include clams, mussels, crab, salmon, skim milk, beef, chicken, and turkey. It is also added to some breakfast cereals. Your body needs vitamin B12 to keep your blood cells and nerve cells working properly.

Can you have too much B12 in pregnancy?

Another study in pregnant women showed that extremely high B12 levels due to vitamin supplements increased the risk of autism spectrum disorder in their offspring ( 9 ).

Is B12 level of 1500 too high?

There is no consensus on the definition of high or elevated B12. Previous studies have chosen a variety of levels to represent high or very high B12 (pmol/l) levels. Some examples include: 664.219; 5131; 700 (high) and 1500 (very high)11; and 601 (high) and 1000 (very high)10.

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Can B12 cause miscarriage?

B12 deficiency and Miscarriage: Far More Common Than Doctors Think. A recurring theme in medical literature is that B12 deficiency is a fairly rare cause of miscarriage or stillbirth.

Can I take B12 shots while pregnant?

Unless there is a medical necessity to receive a shot or IV, such as life-threatening electrolyte imbalance, these treatments should be avoided during pregnancy and for as long as you’re breastfeeding.

Do prenatal vitamins have B12?

Yes prenatal vitamins contain B12. But human beings are not good at absorbing this particular vitamin; in fact we only absorb 1-2 percent of a typical B complex supplement.

Does too much B12 cause autism?

Research presented by researchers from Johns Hopkins University caused a frenzy in 2016. They found that moms with extremely high levels of folic acid and vitamin B-12 in their blood were linked to an increased autism risk of nearly 18 percent.

Can too much folic acid harm the baby?

But even though folic acid is important, taking too much could be problematic. Research is pointing to some possible negative effects of consuming too much folic acid, such as impaired fetal growth, increased risks of childhood diseases like asthma and autism, and promoting the growth of some cancer cells.

What does it mean if your B12 is too high?

An abnormally high vitamin B-12 status can be an early sign of liver disease, diabetes, or certain types of leukemia. A doctor may use the results of a vitamin B-12 test to help form their diagnosis.

What causes high B12 in the blood?

The most common cause of high B12 in the blood is due to recent ingestion or injection of supplemental vitamin B12. We don’t worry about overdosing on B12 supplements because excess can be excreted in your urine. It could also be possibly from your diet if high in animal products such as meat, eggs, and shellfish.

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What level should your vitamin B12 be?

But a normal level of vitamin B12 in your bloodstream is generally between 190 and 950 picograms per milliliter (pg/mL). Between 200 to 300 pg/mL is considered borderline and your doctor may do more testing. Below 200 pg/mL is low and more testing is needed.

How long does it take to get rid of excess B12?

If a person stops consuming the vitamin, the body’s stores of this vitamin usually take about 3 to 5 years to exhaust. People should not take high doses of vitamin B12 as a cure-all, but otherwise the vitamin does not appear to be toxic; consuming excess amounts of B12 is not recommended.

What happens if Vitamin B12 is low in pregnancy?

Neural tube defects

If you’re pregnant, not having enough vitamin B12 can increase the risk of your baby developing a serious birth defect known as a neural tube defect. The neural tube is a narrow channel that eventually forms the brain and spinal cord.

What is the best time to take vitamin B12?

Water-soluble vitamins absorb best on an empty stomach. That means taking them first thing in the morning, 30 minutes prior to eating, or two hours after a meal. Water-soluble vitamins dissolve in water so your body can use them. Vitamin C, all B vitamins, and folate (folic acid) are water soluble.

Can vitamins prevent miscarriage?

Taking any vitamin supplements prior to pregnancy or in early pregnancy does not prevent women experiencing miscarriage. However, evidence showed that women receiving multivitamins plus iron and folic acid had reduced risk for stillbirth.

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