Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
High blood folate concentration in combination with low serum vitamin B-12 concentration is associated with a higher risk for cognitive impairment. The graphs show results from a study performed in Australia (109) (A) and a study performed in the United States (110) (B). Data were adapted from references 109 and 110 with permission.
