TABLE 3.
Prevalence of total intakes above the UL in adult (≥19 y of age) users of dietary supplements in the United States, 2003–20061
| Age | Calcium (n = 3819) | Iron (n = 1909) | Zinc (n = 2914) | Magnesium (n = 3051) |
| Men | ||||
| All ≥19 y | 4.5 ± 0.5 | 12.1 ± 1.3 | 11.2 ± 1.2 | 3.6 ± 0.7 |
| 19–30 y | 2.6 ± 1.0 | 11.0 ± 2.3 | 8.5 ± 2.3 | 2.1 ± 0.8 |
| 31–50 y | 3.1 ± 0.6 | 9.8 ± 1.9 | 8.2 ± 1.3 | 3.3 ± 1.2 |
| 51–70 y | 7.9 ± 1.4 | 13.6 ± 2.1 | 13.4 ± 2.5 | 4.0 ± 1.5 |
| ≥71 y | 2.5 ± 0.8 | 19.1 ± 3.6 | 16.1 ± 1.6 | 6.1 ± 1.1 |
| Women | ||||
| All ≥19 y | 7.0 ± 0.9 | 7.3 ± 0.9 | 7.2 ± 0.8 | 7.2 ± 1.1 |
| 19–30 y | 1.3 ± 0.6 | 10.6 ± 2.3 | 5.7 ± 1.9 | 4.2 ± 2.1 |
| 31–50 y | 2.6 ± 0.8 | 7.0 ± 1.5 | 5.4 ± 1.4 | 5.8 ± 1.4 |
| 51–70 y | 15.5 ± 1.8 | 5.7 ± 1.7 | 7.5 ± 1.8 | 9.3 ± 2.0 |
| ≥71 y | 16 ± 0.5 | 8.0 ± 1.9 | 11.3 ± 1.7 | 7.3 ± 1.9 |
1
All values are percentages ± SEs. UL, tolerable upper intake level.