In some people, high levels of B12 may cause gastrointestinal problems such as bloating and diarrhea. And if you have high blood pressure or poor cardiovascular health, having too much B12 may further complicate these issues. Pregnant and breastfeeding women may also need to be especially mindful of B12 levels.
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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.
Is very high B12 serious?
Is taking high doses of B12 helpful or harmful? Since B12 is a water-soluble vitamin, it’s generally considered safe, even at high doses. No Tolerable Upper Intake Level (UL) has been established for B12, due to its low level of toxicity.
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.
How can I reduce my vitamin B-12?
How to Get Rid of Excess Vitamin B12
- Reduce the amount of animal-derived foods that appear in your diet, as they contain vitamin B12.
- Drink more water to help flush your body of water-soluble elements in the blood, which includes vitamin B12.
What cancers cause high B12?
In the Danish registry, a B12 > 800 pmol/L (1084 ng/L) was associated with the following cancer sites: pancreas, esophagus and stomach, colon and rectum, lungs, kidneys, urinary bladder, and strongly with liver [14].
Can too much B12 damage kidneys?
Kidney and Liver Problems
If you have liver or kidney problems, consult with your doctor before taking over-the-counter vitamins containing B-12. Excess vitamin B-12 can damage liver and kidney cells, leading to symptoms of liver and kidney failure, according to Drugs.com.
What foods to avoid if B12 is high?
To start, limit your intake of beef, dairy, fish and seafood. Clams, for example, provide 84.1 micrograms of vitamin B12 per serving, as per the NIH — that’s about 1,400 percent of the daily recommended intake.
Does B12 damage your liver?
Vitamin B12 therapy has not been linked to ALT elevations or to clinically apparent acute liver injury.
Can vitamin B12 cause heart problems?
Macrocytosis associated with vitamin B12 deficiency is also associated with fatal and non-fatal coronary disease, myocardial infarction, stroke, and other circulatory health problems.
Can too much B12 cause blood clots?
A few people experience gastrointestinal issues, such as bloating or diarrhea, from getting too much B-12. In rare cases, too much B-12 from a combination of diet and supplements can cause blood clots. You could also be allergic to a B-12 supplement and experience itching and rashes.
Can stress cause high B12 levels?
On the other hand, a lot of vitamin B12 is used up for producing neurotransmitters and hormones due to the constantly circling thoughts and strong feelings. The production of hormones like serotonin, adrenalin, and noradrenalin, in particular, significantly increases vitamin B12 consumption.
Can too much B12 cause rapid heart rate?
A rapid heart rate can be caused by more than a vitamin B-12 deficiency, and the American Heart Association reports that a fast heart rate may be due to ventricular tachycardia, which starts in the lower chambers of the heart.
Does vitamin B12 affect cholesterol?
Not only has research shown that taking vitamin B12 daily can lower cholesterol naturally, but it can also provide additional cardiovascular health benefits, such as reducing the risk of developing atherosclerosis (hardening and narrowing of the arteries).
Should I stop taking B12 if my levels are high?
Because of the low toxicity of vitamin B12, no tolerable upper intake level (UL) has been set by the US Food and Nutrition Board.” It is, however, important to note that too much B12 may cause issues in certain cases. In some people, high levels of B12 may cause gastrointestinal problems such as bloating and diarrhea.