Earlier quoted context omitted.
Can you link me to the reference that states people should use supplements who have a normal diet? My point was that athletes are using their bodies in the extreme do not require supplements. Discovering new findings with me is usually fine, but am nervous when it involves my health.
I agree with you, kayhi. This is our health, and we want to make it so that everyone in the world not only top-tier athletes are never deficient. Sure, here's a CDC report: https://www.cdc.gov/nutritionreport/pdf/Nutrition_Book_compl... as well as this secondary study that summarizes some of the findings https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4822995/ .
Summary reference:
"The Nutrition Report has limitations. First, it does not cover information beyond biochemical indicators, such as dietary intake, supplement usage, hematologic measurements, and anthropometric body measurements, which are generally used together with the biomarker information to comprehensively assess nutritional status."
"forfeit insight into the association between variables unique to each individual biomarker"