Bioavailability of Dietary Iron in Man

INTRODUCTION 123 MEASUREMENTS OF DIETARY BIOAVAILABILITY OF IRON 124 Earlier Methods 124 Extrinsic Tag Method 125 BIOAVAILABILITY OF NON-HEME IRON 126 Individual Factors Influencing Bioavailability 126 Iron status 126 Pregnancy 127 Disease states 128 Dietary Factors Influencing lron Bioavailability 128 Bioavailability of iron in single foods 128 Pool concept and concept of bioavailability 129 Diet factors that particularly influence bioavailability of non-heine iron 130 Bioavailabilio~ of iron in meals from different countries 132 Bioavailability of fortification iron 133 BIOAVAILABILITY OF HEME IRON 140 Individual Factors 140 Dietary Factors 141 ASSESSMENT OF BIOAVAILABILITY OF IRON IN THE WHOLE DIET ...... 141 Earlier Studies 141 Implications of the Pool Concept 142 Estimations Based on Bioavailable Nutrient Density 143 CONCLUSIONS 144