TABLE 2.

Mean total, naturally occurring, fortified, and enriched nutrients and percentages of daily naturally occurring, fortified, and enriched nutrients in all individuals aged ≥2 y¹

	Total	Naturally occurring		Fortified + enriched		Enriched		Fortified
Nutrient	Mean ± SEM	Mean ± SEM	%	Mean ± SEM	%	Mean ± SEM	%	Mean ± SEM	%
Thiamin, mg/d	1.7 ± 0.02	0.9 ± 0.01	54.9	0.7 ± 0.01	45.1	0.5 ± 0.01	31.0	0.2 ± 0.01	14.1
Riboflavin, mg/d	2.3 ± 0.03	1.7 ± 0.02	75.5	0.6 ± 0.01	24.5	0.3 ± 0.004	12.9	0.3 ± 0.01	11.6
Niacin, mg/d	24.3 ± 0.3	17.4 ± 0.2	71.6	6.9 ± 0.2	28.4	3.8 ± 0.05	15.5	3.1 ± 0.1	12.8
Folate, μg DFE/d	401 ± 4	200 ± 2	50.0	200 ± 3	50.0	130 ± 2	32.5	70.4 ± 2.6	17.6
Iron, mg/d	15.8 ± 0.1	9.8 ± 0.1	62.3	5.9 ± 0.1	37.7	3.0 ± 0.04	19.1	2.9 ± 0.1	18.6
Vitamin D, μg/d	4.9 ± 0.1	2.0 ± 0.1	40.8					2.9 ± 0.1	59.2
Vitamin A, μg RAE/d	602 ± 10	418 ± 6	69.3					185 ± 6	30.7
Vitamin E, mg AT/d	6.9 ± 0.1	6.5 ± 0.1	94.1					0.4 ± 0.05	5.9
Vitamin K, μg/d	85.4 ± 1.8	84.3 ± 1.7	98.7					1.1 ± 0.2	1.3
Vitamin C, mg/d	86.6 ± 1.7	73.1 ± 1.5	84.4					13.5 ± 0.6	15.6
Vitamin B-6, mg/d	1.9 ± 0.03	1.5 ± 0.01	81.0					0.4 ± 0.02	19.0
Vitamin B-12, μg/d	5.3 ± 0.1	4.4 ± 0.1	82.1					1.0 ± 0.03	17.9
Calcium, mg/d	940 ± 12	885 ± 12	94.1					55.3 ± 2.5	5.9
Phosphorus, mg/d	1327 ± 13	1296 ± 12	97.7					30.9 ± 1.5	2.3
Magnesium, mg/d	277 ± 3	266 ± 3	96.2					10.5 ± 0.6	3.8
Zinc, mg/d	12.1 ± 0.1	10.9 ± 0.1	90.2					1.2 ± 0.04	9.8
Copper, mg/d	1.3 ± 0.01	1.2 ± 0.01	97.0					0.04 ± 0.004	3.0
Potassium, mg/d	2616 ± 25	2597 ± 24	99.2					19.7 ± 1.4	0.8
Selenium, μg/d	107 ± 1	106 ± 1	99.3					0.7 ± 0.1	0.7

¹Data source: NHANES 2003–2006; = 16,110 using the first 24-h recall. Nutrients in foods consumed as reported in NHANES were separated into nutrients naturally occurring and those that were added; when possible, added nutrients were further separated into nutrients added via enrichment and those added via fortification.