Dietary Reference Intakes (DRI) structure Community Protective Factors
https://link.springer.com/article/10.1007%2Fs00394-017-1580-2
Ranard, K.M. et al. Eur J Nutr (2017).
DRI for lutein:
Lutein, a xanthophyll carotenoid found in egg yolks & colorful fruits / vegetables, It increases visual performance & reduces risk of age-related macular degeneration. Interest in establishing DRI-like guidelines for non-essential bioactives, like lutein, that promote optimal health and/or prevent chronic diseases