What are the nutrient standards in use today?

Nutrient standards today primarily include the Dietary Reference Intakes (DRIs), which encompass several values such as Recommended Dietary Allowances (RDAs), Adequate Intakes (AIs), and Tolerable Upper Intake Levels (ULs). These standards guide nutritional requirements for various populations based on age, gender, and life stages. Additionally, the World Health Organization (WHO) and other international bodies provide guidelines on nutrient intake to promote health and prevent diseases. These standards are regularly updated to reflect new research findings and dietary patterns.