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…

Many medications can prevent the absorption of vitamine B-12, either by bonding with it themselves or by blocking the actual digestive process.  Here’s the list: read more…

Many diseases and medical conditions can either cause or have roots in vitamin B-12 deficiency.  Many of these issues relate to an inability to properly absorb vitamin B12 in the gut (which is a surprisingly complex three stage process).  Here’s a quick list: read more…