In the United States, about 6%Trusted Source of people under age 60 and 20% of people over 60 have a vitamin B12 deficiency. A lack of vitamin B12 can lead to anemia and serious nervous system problems.
In the United States, about 6%Trusted Source of people under age 60 and 20% of people over 60 have a vitamin B12 deficiency. A lack of vitamin B12 can lead to anemia and serious nervous system problems.
