Table 3. Nutrient density constraints based on population structure weighted estimated average requirements (EARs), average intakes (AIs) and upper limits (ULs), and relative nutrient densities of Model A and B diets.
Nutrient | Weighted1 EAR/1000 kJ2 or AI/1000 kJ | Weighted UL/1000 KJ | Nutrient density as a percent of target (%) | |||
Baseline intake | Model A | Model B | Model B (UL) | |||
Linoleic (n-6) (g) | 1.05 (AI) | - | 88.0 | 106.5 | 102.5 | - |
α-Linolenic (n-3) (g) | 0.10 (AI) | - | 167.8 | 165.3 | 167.5 | - |
LC n-3 (mg) | 10.71 (AI) | 349.89 | 119.6 | 283.4 | 271.7 | 8.3 |
Protein (g) | 3.83 | - | 198.3 | 263.9 | 262.0 | - |
Sodium (mg) | - | 224.54 | 150.7 | 146.2 | 148.9 | 148.9 |
Potassium (mg) | 329.76 (AI) | - | 66.0 | 100.4 | 100.0 | |
Iron (mg) | 0.72 | 4.69 | 202.7 | 265.8 | 271.2 | 41.6 |
Zinc (mg) | 0.76 | 3.31 | 126.4 | 176.4 | 177.1 | 40.8 |
Calcium (mg) | 88.42 | 291.57 | 71.2 | 116.9 | 115.0 | 34.9 |
Magnesium (mg) | 25.95 | 31.04 | 94.1 | 139.0 | 138.3 | 115.6 |
Phosphorus (mg) | 70.56 | 426.0 | 175.3 | 252.1 | 249.6 | 41.3 |
Iodine (µg) | 10.33 | 88.86 | 109.3 | 142.1 | 142.3 | 16.5 |
Riboflavin (mg) | 0.09 | 167.5 | 330.7 | 328.9 | - | |
Niacin (mg) | 1.09 | 3.03 | 359.1 | 455.0 | 457.5 | - |
Total folate3 (µg) | 30.65 | 85.91 | 168.2 | 260.0 | 212.4 | 75.8 |
Vitamin C (mg) | 3.35 | 194.9 | 293.3 | 303.0 | - | |
Vitamin A (µg) | 52.26 | 248.99 | 115.0 | 237.7 | 241.3 | 50.6 |
Thiamine (mg) | 0.09 | 185.3 | 291.8 | 299.0 | - | |
Vitamin E (mg) | 0.88 (AI) | 25.14 | 66.1 | 106.8 | 102.6 | 3.6 |
Dietary fibre (g) | 2.687 (AI) | 73.7 | 111.0 | 113.5 | - |
1 Weighting is based on ABS Census 2006 figures.
2 Estimated energy requirements were calculated by age group and sex (1–3 years; 4–8 years; 9–13 years; 14–18 years; 19–30 years; 31–50 years; 51–70 years; >70 years) based on Nutrient Reference Values for Australia and New Zealand, tables 1–3 [28]. For age 19 to >70 years, the midpoint height and weight of each adult age group was used. For <18 years, the midpoint of the estimated energy requirement (BMR) range across each age and sex category was used. Energy expenditure was estimated at 1.6 basal metabolic rate overall. We estimated 8% of women aged 14–50 years were pregnant and 8% were breastfeeding, based on Australian Bureau of Statistics 2006 births data, table 9.2[54] and 2006 census data for women aged 13–54 years.
3 EAR and UL for Folate is derived from EAR for Folate as dietary folate equivalents.