Nutrition For Dummies. Carol Ann Rinzler

19–30 1.2 1.3 16 5 1.3 400 2.4 30 31–50 1.2 1.3 16 5 1.3 400 2.4 30 50–70 1.2 1.3 16 5 1.7 400 2.4 30 71 and older 1.2 1.1 16 5 1.7 400 2.4 30 Females 19–30 1.1 1.1 14 5 1.3 400 2.4 30 31–50 1.1 1.1 14 5 1.3 400 2.4 30 51–70 1.1 1.1 14 5 1.5 400 2.4 30 71 and older 1.1 1.1 14 5 1.5 400 2.4 30 Pregnant 1.4 1.1 18 6 1.9 600 2.6 30 Nursing 1.4 1.1 17 7 2.0 500 2.8 35

       * Adequate Intake (AI)

TABLE 3-2 Mineral RDAs for Healthy Adults

---

Age (years)	Calcium (mg)*	Phosphorus (mg)	Magnesium (mg)	Iron (mg)	Zinc (mg)	Copper (mcg)
Males
19–30	1,000	700	400	8	11	900
31–50	1,000	700	420	8	11	900
51–70	1,200	700	420	8	11	900
71 and older	1,200	700	420	8	11	900
Females
19–30	1,000	700	310	18	8	900
31–50	1,000	700	320	18	8	900
51–70	1,000/1,500^**	700	320	8	8	900
71 and older	1,000/1,500^**	700