Premise: Vitamin B12 , also called cobalamin , is a water-soluble vitamin that has a key role in the normal functioning of the brain and nervous system , and the formation of red blood cells . It is involved in the metabolism of every cell of the human body , especially affecting DNA synthesis , fatty acid and amino acid metabolism . Due to impairment of vitamin B12 absorption during aging , people over age 60 are at risk of deficiency .
Hypothesis: Nutrient Vitamin B12 is important.
Label: ENTAILMENT