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What Are The Health Risks Of Vitamin B12 Overdose?

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Posted on Fri, 19 Feb 2016
Question: Do high doses (40,000 % of RDA) of B12 increase the risk of getting prostate cancer, increase the growth of prostate cancer, and stimulate the spread of cancer in the body. Does this also apply to women/
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Answered by Dr. Robert Galamaga (3 hours later)
Brief Answer:
Considerations

Detailed Answer:
Hello & thank you for submitting your question.

You are very wise to recognize that cancer cells likely behave differently than the normal cells in the body and therefore might respond differently to certain nutrients.

There is no rigorous scientific research or evidence proving that such high intake of vitamin B12 increases prostate cancer risk. However, in patients who already have a diagnosis of prostate cancer, it is not advisable to take high doses of vitamins or other supplements because they may interfere with other medications. One should always consult with a p or cancer therapies. Always consult with a physician before taking any supplement because although it is soemthing that is "healthy and good for you", this pertains only to if it's taken in the right dosage.

With regards to any risk in women, women are not at risk for prostate carcinoma because they do not have this organ. Regarding a possible risk for other cancers, again, there is no scientific or medical evidence to support this hypothesis.

Thank you for your question, I hope this response helps.

Sincerely,
Dr Galamaga
Note: For further queries related to kidney problems Click here.

Above answer was peer-reviewed by : Dr. Yogesh D
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Answered by
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Dr. Robert Galamaga

Oncologist

Practicing since :2002

Answered : 2635 Questions

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What Are The Health Risks Of Vitamin B12 Overdose?

Brief Answer: Considerations Detailed Answer: Hello & thank you for submitting your question. You are very wise to recognize that cancer cells likely behave differently than the normal cells in the body and therefore might respond differently to certain nutrients. There is no rigorous scientific research or evidence proving that such high intake of vitamin B12 increases prostate cancer risk. However, in patients who already have a diagnosis of prostate cancer, it is not advisable to take high doses of vitamins or other supplements because they may interfere with other medications. One should always consult with a p or cancer therapies. Always consult with a physician before taking any supplement because although it is soemthing that is "healthy and good for you", this pertains only to if it's taken in the right dosage. With regards to any risk in women, women are not at risk for prostate carcinoma because they do not have this organ. Regarding a possible risk for other cancers, again, there is no scientific or medical evidence to support this hypothesis. Thank you for your question, I hope this response helps. Sincerely, Dr Galamaga