What is a Validated Food Frequency Questionnaire?
                                
                                
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                                    3 min read                                
                            
                                According to the National Cancer Institute, validated food frequency questionnaires (FFQs) have been used for decades in large epidemiological studies to estimate long-term dietary intake and its relationship with chronic diseases. A validated food frequency questionnaire is a specialized dietary assessment tool that has been rigorously tested and proven to accurately measure the typical food and nutrient intake within a specific population group over a defined period.