Tag: High vitamin b12 levels

Over 40 percent of the world's population may have suboptimal B12 levels, which can lead to fatigue and other health issues. This common concern has led many to question if the reverse is possible: Can too much vitamin B12 be toxic? The answer is more complex than a simple yes or no.

While excess vitamin B12 from supplements is typically excreted by the body, an unexplained increase in blood levels can be a biomarker for serious underlying conditions. This article investigates what happens when vitamin B12 is increased, from potential side effects to the critical health signals it might be sending.