A member asked:

Can a vitamin deficiency cause fatigue and the need for excess sleep?

A doctor has provided 1 answer
Dr. Steven Charlap answered

Specializes in Holistic Medicine

Yes: But it could be many other things as well. Don't self-diagnose. If you are consistently getting at least 7-8 hours of uninterrupted sleep a night and still feel fatigued, please see a doctor.

Answered 2/28/2016

5.7k views

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