Age		Adequate intake (mg per day)
Up to six months		210
6 to 12 months		270
1 through 3 years		500
4 through 8 years		800
9 through 13 years		1,300
14 through 18 years		1,300
19 through 30 years		1,000
31 through 50 years		1,000
51 through 70 years		1,200
Age 70 years and older		1,200
Pregnancy
	18 years and under	1,300
	19 through 50 years	1,000
Lactation
	18 years and under	1,300
	19 through 50 years	1,000