| Sex and age |
Mean protein intake |
Low-protein diets |
Medium-protein diets |
High-protein diets |
Very-high-protein diets |
|
|
g |
% (<100% RDA) |
% (100–150% RDA) |
% (150–200% RDA) |
% ( 200% RDA) |
| Males |
| 20–29 y |
104 |
15.3 |
31.2 |
28.3 |
25.2 |
| 30–39 y |
103 |
15.8 |
30.1 |
30.2 |
23.9 |
| 40–49 y |
95 |
17.2 |
39.5 |
25.0 |
18.3 |
| 50–59 y |
90 |
21.8 |
38.2 |
25.3 |
14.7 |
| 60–69 y |
84 |
24.1 |
46.4 |
22.1 |
7.4 |
| >70 y |
73 |
37.7 |
46.0 |
13.8 |
2.5 |
| Females |
| 20–29 y |
66 |
27.2 |
44.8 |
18.1 |
9.9 |
| 30–39 y |
65 |
29.4 |
44.3 |
17.7 |
8.6 |
| 40–49 y |
64 |
29.0 |
45.8 |
18.8 |
6.4 |
| 50–59 y |
64 |
29.9 |
45.8 |
19.2 |
5.1 |
| 60–69 y |
60 |
31.8 |
46.9 |
17.5 |
3.8 |
| >70 y |
57 |
41.1 |
41.6 |
13.5 |
3.8 |
|
| 1Adapted from reference 2. |
|
