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…

Weight loss (bariatric) surgery frequently leads to vitamin B12 deficiency, as surgery can result in the gut no longer producing intrinsic factor. Intrinsic factor (IF) is needed if the body is to absorb B12 successfully into the bloodstream.

There are many types of weight loss surgery that can result in chronic vitamin B12 deficiency: read more…

The process of vitamin B-12 absorption by the body is complex and can be disturbed rather easily. Here’s how it happens: read more…