Dietary reference intakes, nutrient density scoring, phytonutrient analysis, protein quality assessment, and bioavailability calculations for precision nutrition research.
USDA and NIH Dietary Reference Intake values (RDA/AI) for key nutrients by age and sex group. Sets Daily Value (DV) benchmarks for the Nutrient Density Score calculator (iron, calcium, sodium targets) and provides reference context for the Bioavailability calculator (ba-nutrient typical intakes).
Source: USDA/NIH Dietary Reference Intakes. RDA or AI values where RDA not established. FDA Daily Values (2020) used for labeling context.
USDA FoodData Central nutrient composition per serving for common whole foods. Auto-populates protein, fiber, iron, calcium, calories, sodium, and sugar in the Nutrient Density Score calculator (SF3-S.007) and protein per serving in the Protein Quality calculator (SF3-S.009).
Source: USDA FoodData Central. SR Legacy and Foundation Foods. Values per typical serving size shown.
Compares typical US dietary intake against DRI recommendations by demographic group to identify the most common nutrient shortfalls. Based on USDA What We Eat in America (WWEIA) survey data.
Tip: Use the gap output to identify which nutrients to prioritize in the Nutrient Density Score and Bioavailability calculators above.
Model SF3-S.006
Calculate personalized DRI values for macronutrients and key micronutrients based on age, sex, activity level.
Model SF3-S.007
Score nutrient density using Nutrient Rich Foods Index. Compare whole vs refined grain products.
Model SF3-S.008
Estimate phytonutrient intake from fruit/vegetable servings. Score antioxidant capacity using ORAC values.
Model SF3-S.009
Calculate protein quality using PDCAAS methodology. Compare animal and plant sources for amino acid completeness.
Model SF3-S.010
Adjust nutrient intake for bioavailability. Accounts for food matrix, enhancers, and inhibitors on iron, zinc, calcium.
Aligned with USDA Secretary Rollins' Priority #5: Improving Human Health through Precision Nutrition and Food Quality. AgrStak's tools help nutrition researchers, dietitians, and food developers quantify nutrient quality, bioavailability, and dietary adequacy.