Nutrition & diet

# Nutrition & Diet Domain Description

Nutrition and diet represents one of the most fundamental pillars of human health, influencing energy levels, immune function, cardiovascular health, metabolic regulation, bone strength, cognitive performance, and disease prevention. The foods and beverages we consume directly impact virtually every biological system in the body, making dietary choices a critical modifiable factor for both disease prevention and management of existing health conditions. Unlike some health interventions that target a single pathway, nutritional approaches often work through multiple mechanisms simultaneously—affecting inflammation, nutrient status, gut health, hormonal regulation, and metabolic processes. This domain is particularly important because dietary patterns are established early in life and tend to persist, meaning improvements in nutrition can have compounding benefits across decades. Additionally, nutrition intersects with nearly every other health domain, as dietary quality influences mental health, bone density, cardiovascular outcomes, weight management, blood sugar control, and even longevity.