Epidemiologists use several methods to study the relationship between diet, nutrition, and health outcomes:
Cohort studies track groups of individuals over time to assess the impact of diet on health outcomes. Case-control studies compare individuals with a specific disease to those without to identify dietary risk factors. Cross-sectional studies analyze dietary habits and health data at a single point in time. Randomized controlled trials (RCTs) provide high-quality evidence by assigning participants to different dietary interventions to observe direct effects.
