Table 1.

Demographics of US adults (age 19 years and older) according to absolute (g/day) and relative (g/kg BW) protein intake from different protein source types (NHANES 2007–2010).

	Deciles of Individual Usual Protein Intake
	D1	D2	D3	D4	D5	D6	D7	D8	D9	D10
Population with Protein Intake from Animal Sources
Sample Size (n)	1105	1081	1148	1127	1162	1120	1096	1061	1015	1062
Median animal protein intake (g/kg BW)	0.267	0.343	0.381	0.411	0.441	0.476	0.514	0.554	0.600	0.689
Animal protein intake (g/day)	2.9 ± 0.1	10.7 ± 0.3	20.9 ± 0.3	26.7 ± 0.5	31.3 ± 0.7	35.8 ± 0.7	40.2 ± 0.6	47.1 ± 0.6	61.6 ± 0.9	98.0 ± 1.7
Female (%)	93.0 ± 0.9	78.9 ± 2.4	89.0 ± 1.2	80.4 ± 1.7	65.8 ± 2.1	47.2 ± 2.1	30.4 ± 1.4	13.1 ± 1.6	10.8 ± 1.1	3.4 ± 0.7
Age (years)	49.3 ± 0.9	47.2 ± 0.7	50.0 ± 0.8	50.4 ± 0.6	49.8 ± 0.7	49.4 ± 0.6	47.1 ± 0.6	44.7 ± 0.6	40.7 ± 0.6	37.9 ± 0.5
Ethnicity (%)
Hispanic	10.6 ± 1.4	11.8 ± 2.0	11.5 ± 2.0	12.8 ± 1.9	13.3 ± 1.7	12.8 ± 2.0	12.3 ± 1.7	14.5 ± 2.2	15.8 ± 2.1	20.2 ± 2.6
White	75.3 ± 2.7	71.8 ± 3.0	71.3 ± 2.6	72.1 ± 3.2	70.0 ± 2.7	69.4 ± 3.0	69.1 ± 3.3	68.2 ± 2.9	65.1 ± 2.8	61.0 ± 3.4
Black	8.9 ± 1.2	10.0 ± 1.3	13.2 ± 1.7	11.5 ± 1.7	12.0 ± 1.6	10.9 ± 1.3	11.6 ± 1.5	11.5 ± 1.4	12.2 ± 1.4	12.1 ± 1.2
Other	5.2 ± 1.0	6.4 ± 1.3	3.9 ± 0.8	3.6 ± 0.9	4.7 ± 0.9	6.9 ± 1.4	6.9 ± 1.4	5.8 ± 1.6	6.9 ± 1.0	6.7 ± 1.5
Population with Protein Intake from Dairy Sources
Sample Size (n)	1258	1313	1177	1105	1055	1134	1042	1023	940	930
Median dairy protein intake (g/kg BW)	0.070	0.105	0.133	0.150	0.165	0.179	0.195	0.212	0.235	0.279
Dairy protein intake (g/day)	0.03 ± 0.003	1.2 ± 0.04	4.0 ± 0.1	6.4 ± 0.1	8.9 ± 0.1	11.7 ± 0.2	15.1 ± 0.2	19.0 ± 0.2	25.1 ± 0.3	41.7 ± 0.9
Female (%)	48.5 ± 1.7	54.3 ± 2.2	54.4 ± 1.6	55.9 ± 1.5	52.1 ± 1.9	53.6 ± 1.8	47.3 ± 1.9	49.0 ± 1.6	51.4 ± 1.9	45.3 ± 1.9
Age (years)	44.5 ± 0.7	48.2 ± 0.7	48.2 ± 0.7	47.9 ± 0.7	46.7 ± 0.8	48.3 ± 0.8	46.4 ± 0.7	46.6 ± 0.6	45.0 ± 0.8	44.6 ± 0.7
Ethnicity (%)
Hispanic	18.9 ± 2.7	14.8 ± 2.4	13.1 ± 2.1	13.1 ± 2.0	12.4 ± 2.1	12.6 ± 1.6	14.8 ± 1.8	12.5 ± 2.0	12.2 ± 1.8	11.2 ± 1.7
White	51.5 ± 3.9	58.9 ± 3.6	65.3 ± 3.3	66.5 ± 3.5	73.1 ± 3.0	72.3 ± 2.4	71.3 ± 2.7	75.0 ± 2.7	79.3 ± 2.5	80.4 ± 2.1
Black	20.3 ± 2.2	19.1 ± 2.2	14.8 ± 1.8	13.5 ± 1.6	10.4 ± 1.4	9.0 ± 1.1	8.4 ± 1.2	8.8 ± 1.1	5.2 ± 0.8	4.4 ± 0.6
Other	9.4 ± 1.8	7.2 ± 1.5	6.8 ± 1.5	6.9 ± 1.5	4.1 ± 0.8	6.1 ± 1.1	5.4 ± 1.1	3.8 ± 0.8	3.4 ± 0.9	3.9 ± 0.9
Population with Protein Intake from Plant Sources
Sample Size (n)	1203	1174	1133	1116	1104	1011	1054	1067	1042	1073
Median plant protein intake (g/kg BW)	0.205	0.240	0.263	0.281	0.298	0.316	0.334	0.358	0.389	0.453
Plant protein intake (g/day)	7.6 ± 0.2	12.6 ± 0.1	16.2 ± 0.1	18.7 ± 0.1	21.5 ± 0.3	23.8 ± 0.2	27.1 ± 0.2	30.6 ± 0.3	36.0 ± 0.2	52.1 ± 0.6
Female (%)	67.3 ± 1.8	61.8 ± 1.5	59.6 ± 2.2	56.8 ± 2.2	51.0 ± 2.3	48.8 ± 2.5	48.5 ± 2.4	39.9 ± 1.8	43.4 ± 1.9	34.7 ± 1.9
Age (years)	43.8 ± 0.6	46.5 ± 0.7	48.9 ± 0.5	49.0 ± 0.8	48.9 ± 0.5	47.2 ± 0.6	46.7 ± 0.8	46.5 ± 0.7	46.3 ± 0.9	42.6 ± 0.7
Ethnicity (%)
Hispanic	12.5 ± 2.1	14.2 ± 2.2	10.4 ± 1.5	13.6 ± 1.9	11.5 ± 1.9	11.5 ± 1.7	13.5 ± 1.7	15.0 ± 2.5	15.8 ± 2.2	17.7 ± 2.5
White	62.0 ± 3.6	66.2 ± 3.2	71.8 ± 2.8	71.4 ± 3.1	71.4 ± 2.9	73.8 ± 2.5	69.1 ± 2.9	69.7 ± 3.3	69.9 ± 3.0	68.2 ± 3.3
Black	22.0 ± 2.5	15.8 ± 2.2	13.2 ± 1.6	11.6 ± 1.7	10.6 ± 1.4	9.8 ± 1.2	9.3 ± 1.3	8.1 ± 1.0	6.6 ± 0.8	6.9 ± 0.9
Other	3.5 ± 0.8	3.8 ± 0.8	4.6 ± 1.0	3.4 ± 0.9	6.5 ± 1.4	5.0 ± 1.1	8.1 ± 1.6	7.2 ± 1.2	7.8 ± 1.9	7.1 ± 1.4