Blood tests showed that their B12 levels averaged 414.8 pmol/L, while the recommended minimum level in the U.S. is just 148 pmol/L. Participants who had lower B12 levels were found to have "slower ...

All of the participants had B12 levels in their blood that averaged 414.8 pmol/L, which is significantly above the established minimum level of 148 pmol/L (anything below this is considered ...