Table 2.

Recommended dietary allowances (RDA) for calcium and phosphorous. *Adequate Intake (AI) (Bergman et al., 2009), National institutes of health (NIH), 2021.

	Calcium (mg)				Phosphorous (mg)
Age	Male	Female	Pregnancy	Lactation	Male	Female	Pregnancy	Lactation
Infants
Birth to 6 months*	200	200			100	100
7–12 months*	260	260			275	275
Children and adolescents
1–3 years	700	700			460	460
4–8 years	1000	1000			500	500
9–13 years	1300	1300			1250	1250
14–18 years	1300	1300	1300	1300	1250	1250	1250	1250
Adults and Elderly
19–50 years	1000	1000	1000	1000	700	700	700	700
51+ years	1000	1200			700	700