Age-adjusted mean plasma levels of IGF-1, IGFBP-3, and IGF-1:IGFBP-3 molar ratio by intake of minerals in male health professionals
| Quintilea | IGF-1 (ng/mL) | IGFBP-3 (ng/mL) | IGF-1/IGFBP-3 (molar ratio) | |
|---|---|---|---|---|
| Minerals | ||||
| 1 (low) | 169 | 2979 | 0.223 | |
| 2 | 175 | 3096 | 0.221 | |
| 3 | 186 | 3217 | 0.225 | |
| 4 | 189 | 3132 | 0.236 | |
| 5 (high) | 201 | 3211 | 0.244 | |
| P (trend) | (<0.001) | (0.009) | (<0.001) |
a Quintiles based on adding quintile (1–5) of each of potassium, magnesium, zinc, calcium, and phosphorus, and dividing the total score into quintiles. Results are adjusted for age and laboratory run.