Despite concerted efforts to improve diet quality and reduce malnutrition, micronutrient deficiencies remain widespread globally, especially in low- and middle- income countries and among population groups with increased needs, where diets are often inadequate in iron, zinc, folate, vitamin A, calcium, and vitamin B12. There is a need to understand the density of these micronutrients and their bioavailability across diverse foods and the suitability of these foods to help meet requirements for populations with high burdens of micronutrient malnutrition

Full paper available at the above URL

a 2021 paper on bioavailability of nutrients needed per day from different whole food sources. I.E. It’s not just the macronutrients in the food, it’s not just the micronutrients in the food, its how much of the nutrients are bioavailable (absorbed) when consumed.

If you eat 100g of protein but only absorb 4g, your still deficient, etc.