Table 3

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

QuintileaIGF-1 (ng/mL)IGFBP-3 (ng/mL)IGF-1/IGFBP-3 (molar ratio)
Minerals
1 (low)16929790.223
217530960.221
318632170.225
418931320.236
5 (high)20132110.244
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.