How is fatigue linked to vitamin B-12 deficiency?  Well, the answer is pretty straightforward:

• The body requires vitamin B-12 in order to produce red blood cells.
• Red blood cells carry energy (oxygen) throughout the body.
• If the body lacks vitamin B-12 for whatever reason, it makes fewer red blood cells and the ones it does make are abnormal – they can’t transport energy nearly as efficiently. read more…