Harvard Food Frequency Questionnaire

The Harvard Food Frequency Questionnaire (FFQ) is a tool used in nutrition research to assess an individual's dietary habits. It consists of a series of questions asking respondents how often they consume various foods and beverages over a specific period, typically the past year. By analyzing responses, researchers can estimate nutrient intake and examine the relationship between diet and health outcomes. This questionnaire helps in studying large groups of people efficiently, making it a valuable resource for understanding the impact of diet on conditions like heart disease, obesity, and diabetes.