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A 32-year-old member asked:

What causes a vitamin b12 deficiency?

2 doctor answers8 doctors weighed in
Dr. Evan Hirsch
Integrative Medicine 9 years experience
Multiple causese: There are several causes: low stomach acid, pernicious anemia, poor consumption of foods containing B12 and a genetic predisposition that requires more B12 like mthfr gene defect.
Dr. Jaiprakash Thakor Jairam
A Verified Doctoranswered
A US doctor answeredLearn more
Various: Probably the most common cause today is a vegetarian or vegan diet,both of which lack B12. Absorption also a crucial cause ,caused by lack of intrinsic factor in stomach(crucial for absorption),use of some acid lowering medication(B12 not released from ingested food)Even under ideal situations ,less then 10%of ingested B12 will be taken up by the body.

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A 43-year-old member asked:

Can vitamin B12 deficiency cause migraines?

2 doctor answers4 doctors weighed in
Dr. Scott Bolhack
Wound care 35 years experience
B12: B12 deficiency is associated with neuropathies and non-specific neurological symptoms such as irritability, fatigue, depression, and psychosis. It is not associated with migraine headaches, per se.
A 44-year-old member asked:

Vitamin B12 deficiency causes itching, what can I do?

1 doctor answer2 doctors weighed in
Dr. Ed Friedlander
Pathology 44 years experience
Decisive treatment: Don't know if it's the cause of your itch, if you are B12 deficient, either from an ill-advised experiment with a vegetarian lifestyle without supplementation, or pernicious anemia or harboring a fish tapeworm, you had better start getting supplemented now and continuing or you are going to end up with brain damage. Forgive my frankness, and i hope your physician made this clear as well.
A 47-year-old member asked:

Can having vitamin B12 deficiency cause OCD symptoms?

1 doctor answer7 doctors weighed in
Dr. Lynne Weixel
Clinical Psychology 36 years experience
Not at all likely: Almost no chance of a direct link, but... We do know that: 1) the b vitamins are important to nervous system functioning. 2) B12 can make a noticeable difference in how good one feels. 3) deficiencies are (by definition) good to correct. So, do try to improve your diet and even supplement nutrients that are hard to get enough of. See a professional for ocd treatment too.
A 31-year-old member asked:

Will a vitamin B12 deficiency cause infertility?

2 doctor answers4 doctors weighed in
Dr. Jessica Scotchie
Specializes in Obstetrics and Gynecology
No: No, but b vitamins are important for healthy organ development in early pregnancy. It is important to take supplemental folic acid, and consider a b complex vitamin as well, to support normal organ development if you are reproductive aged woman.
A 44-year-old member asked:

Who is at risk of vitamin B12 deficiency?

2 doctor answers5 doctors weighed in
Dr. Bryan Levey
Pediatrics 27 years experience
Many: The classic B12 deficient people are severe alcoholics and vegan type vegetarians. Obviously, the reason for the deficiency is different in the two groups. Vegans simply don't eat enough B12 containing foods. Alcoholics are a bit more complicated than that.
Dr. Jeffrey Kass
Podiatry 28 years experience
Diabetics taking metformin should be monitored as well as this is a reported side effect of the medication.
Sep 29, 2012

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Last updated Dec 25, 2018

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