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.
Answered 6/24/2014
5.1k views
5 doctors weighed in across 2 answers
2 doctors weighed in across 2 answers
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question