Doctor insights on:
Does Vitamin B12 Affect Estrogen Levels
Nothing definitive: A few studies have been done which show influence in both directions: post-menopausal women who took vitamin B12 (and other) supplements showed increased estradiol levels. Women with surgical removal of uterus/ovaries were given estradiol and showed increased B12 levels! The exact connection is unclear. Eat a balanced diet including meat/dairy products; vegetarians may need B12 supplements. ...Read more
My vitamin B12 level is 283 pgml.my body can't absorb B12 orally.so I'm taking 1500 mcg methylcobalmin inj/day.how long can I take them b4 toxicity ?
Depends: on your individual situation. You should get levels rechecked on a regular basis to determine this. ...Read more
Intake + Absorption: Vitamin b12, aka cyanocobalamin, is common in a huge variety of foods; low intake rare. However, none of us absorb B12 directly. Instead, the cells of the upper ⅔ of the stomach which secrete hydrochloric, hcl, acid also produce & secrete a protein, called intrinsic-factor, which binds b12. The small intestines absorb intrinsic-factor with whatever B12 is bound, & the B12 is thereby also absorbed. ...Read more
Needs clarification: The first thing I would do is check the lab result...perhaps a decimal point is out of place as a normal result is in the 200 to 600 pg/ml range. Are the units correct ... pg (picograms) per milliliter. Some medications can affect B12 levels. It would be unusual to have such a high level and no other signs of liver/kidney disease or cancer. ...Read more
Vitamin B12 : It may help with low energy levels depending on the cause. It is always best to consult a physician to determine the cause of fatigue, low energy, weakness, asthenia, etc. Before self-medicating with vitamin supplements. While vitamin B12 is safe, the cause for feeling tired may have to do with something unrelated to it. ...Read more
Ok: Optimal level is 800, so you are close. A little more B12 will not hurt you, but your level is pretty good. ...Read more
Yes: Yes.Get a more detailed answer ›
My VITAMIN B12 was check yesterday. My Level was 293. Should I be taking a over the counter B12, if so how much @ day?
Your B12 level is low. Aim for a goal level of 800. Take as much as is needed to achieve that level.
More information on:
http://drfairchild.blogspot.com/2012/12/b12-deficiency.html ...Read more
How does one go about lowering a high level of vitamin B12 of 1000? It has been that high since 2010. My B6 is also high - 33.4.
Comments: Am not personally troubled when my patients' B-12 comes back elevated, as it is truly unlikely that there will be any problem in near or distant future, but do have them stop the vitamin and recheck in 3 months. Although B-6 can be toxic in some patients, this too will drop over time if you stop it. Your level is not profoundly elevated, currently. ...Read more
What is the max daily dose of vitamin B12 an adult female with very low levels can take? If her face is flushed is she taking too much?
Interesting question: Adults generally need 2.6 micrograms b12/day. To replace deficiencies, im shots bypass gut absorption problems that can contribute to deficiency in the first place. 1, 000 micrograms of intramuscular cobalamin can be given once/day for 10 days, then once/week for four weeks, followed by once/month for life. Sublingual b12, 500-1000mcg/day. The form of B12 (cobalamin) may be important; see comment. ...Read more
What can cause extremely high vitamin B12 levels? My result was >2,000... I thought diet and/or supplements wouldn't cause high levels.
Elevated levels of B12 are non-specific but can be associated with bone marrow diseases like polycythemia. Best to be evaluated by a hematologist.
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High B12: Usually taking too much. Sometimes liver disease. ...Read more
The other way around: Vitamin B12 is not known to be toxic in any amount. However, one of the causes of high blood levels of B12 is liver disease including hepatitis ; cirrhosis. Liver disease certainly affects the digestive system. But it is not high B12 that causes liver disease but liver disease that can cause high B12 levels. As i mentioned earlier, other causes of high B12 include kidney disease ; blood disorders. ...Read more
Yes: But please remember that there are a great many non caloric nutrients in natural food. You can't pick out one two and give them priority. ...Read more
Vitamin B12 level is 150, I am on 1 tablet a day for it 1mg of B12 vitamin. Is this efficient enough? I'm so tired.
Unless you are a strict vegetarian, B12 deficiency suggests problem with absorption of food stuffs and that can explain other symptoms as well. If you have poor absorption of food, you will need injection of B12 and may need additional treatment for malabsorption. You may wish to consult a gastro-enterologist. See this site for info.
http://www.nlm.nih.gov/medlineplus/ency/article/003705.htm. ...Read more
My vitamin B12 level 2 months ago was 450 pg/ml.it is now 250.I was taking 1500 mcg methylcobalmin/day orally.I stopped 10 days ago.is it normal ?
No, unusual: It is rather unusual for B12 levels to drop while taking 1500 mcg methylcobalamin/day. This suggests you are not able to absorb B12, or at least that particular product. Supplements don't always really contain what is on the label & some have additives that reduce absorption. Consider trying methylcolbalamin from a reliable source; if it does not come up then you need B12 shots. ...Read more
Is a vitamin B12 level of 453 low? I've been having these odd prickly tingles all over body. Since taking b12 supp. They have gone away. Thoughts?
See below: B12 of 453 is not low, however if B12 supplement is relieving your symptoms there is not harm in continuing to take it. ...Read more
B12: Generally less than 200 pg/ml.Get a more detailed answer ›
Good question: It depends more on how long it is low. The longer the B12 level is low is more important then the level. Hope this helps. ...Read more
It does not!: Boredom is bad, but it has no known effect on B12 levels! ...Read more
No: That's the serum level of cyanocobalamin. What's more important is looking at the intracellular levels. Having lower values is more dangerous than having higher values. Cyanocobalamin is the B vitamin that helps attach the oxygen molecule to the hemoglobin in red blood cells to deliver oxygen to tissues. So it's very important! ...Read more
Is it true that huge doses of vitamin B12 inhibit the levels of other b vitamins? (source:the web)
No: Someone writing on the internet can put out any silly fantasy and make money doing it, as they appear very learned and caring. This one's just not true. Unlike these people, the scientific physicians in our community and on healthtap are bound by law to tell the truth. ...Read more