TABLE 2.

NAS daily requirements of nutrients of concern in non-pregnant, pregnant, and lactating women across three age groups

	Dietary Reference Intakes (Daily): Recommended Dietary Allowances and Adequate Intakes by age range (years)
	Non-pregnant				Pregnancy			Lactation
Nutrient		14–18	19–30	31–50	14–18	19–30	31–50	14–18	19–30	31–50
Micronutrients (Vitamins and Minerals)	Calcium (mg)	1,300	1,000	1,000	1,300*	1,000*	1,000*	1,300*	1,000*	1,000*
	Folatea (µg)	400	400	400	600**	600**	600**	500**	500**	500**
	Iodine (µg)	150	150	150	220**	220**	220**	290**	290**	290**
	Iron (mg)	15	18	18	27**	27**	27**	10***	9***	9***
	Vitamin A (µg)	700	700	700	750**	770**	770**	1,200**	1,300**	1,300**
	Vitamin B6 (mg)	1.2	1.3	1.3	1.9**	1.9**	1.9**	2.0**	2.0**	2.0**
	Vitamin B12(µg)	2.4	2.4	2.4	2.6**	2.6**	2.6**	2.8**	2.8**	2.8**
	Vitamin C (mg)	65	75	75	80**	85**	85**	115**	120**	120**
	Vitamin D(µg)	15	15	15	15*	15*	15*	15*	15*	15*
	Vitamin Eb (mg)	15	15	15	15*	15*	15*	19**	19**	19**
	Vitamin Kc (µg)	75	90	90	75*	90*	90*	75*	90*	90*
	Thiamin (mg)	1.0	1.1	1.1	1.4**	1.4**	1.4**	1.4**	1.4**	1.4**
	Riboflavin (mg)	1.0	1.1	1.1	1.4**	1.4**	1.4**	1.6**	1.6**	1.6**
Macronutrients	Carbohydrate (g)	130	130	130	175**	175**	175**	210**	210**	210**
	Omega-3 fatty acidsd (g)	1.1	1.1	1.1	1.4**	1.4**	1.4**	1.3**	1.3**	1.3**
	Protein (g)	46	46	46	71**	71**	71**	71**	71**	71**
	Total water (L)	2.3	2.7	2.7	3.0**	3.0**	3.0**	3.8**	3.8**	3.8**

NAS = National Academy of Sciences, Engineering, and Medicine

With the exception of Total Water & Omega-3 fatty acids (Adequate Intakes (AI), these values represent the Recommended Dietary Allowances (RDAs).

^aValues reported as dietary folate equivalents. 1 dietary equivalent = 1 µg food folate = 0.6 µg of folic acid from fortified food or as a supplement consumed with food = 0.5 µg if a supplement taken on an empty stomach.

^bValues presented are for vitamin E as α-tocopherol.

^cValues obtained from: Institute of Medicine (US) Panel on Micronutrients. Washington (DC): National Academies Press (US); 2001.

^dValues presented for alpha-linolenic acid, the most common dietary omega-3 fatty acid.

Note: Astericks are provided for pregnancy and lactation values are color-coded to designate if values are the same (*), higher (**) or lower (***) than non-pregnant values.

Note: Unless otherwise specified, values presented are taken from documents issued by the Food and Nutrition Board of the Institute of Medicine, National Academy of Sciences available at: https://ods.od.nih.gov/HealthInformation/Dietary_Reference_Intakes.aspx.