Dietary intake refers to the types and amounts of food and beverages consumed by an individual or population. This research area focuses on studying and evaluating people's eating habits, nutrient intake, and overall diet quality in order to understand the relationship between diet and health outcomes. Researchers in this field may use methods such as dietary surveys, food diaries, and biomarker analysis to assess dietary intake and its impact on various health conditions such as obesity, cardiovascular disease, diabetes, and cancer. This research is important for informing public health policy, developing dietary guidelines, and designing interventions to promote healthy eating habits and prevent chronic diseases.