Fig. 1.
Adequacy curve for calcium intake (for calcium, EAR = 900 mg/d and RDA = 1100 mg/d). EAR, estimated average requirement
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.