Future of dietary exposure assessment

Area of Science:

• Nutritional Epidemiology
• Dietary Assessment Methods
• Biomarkers of Exposure

Background:

• Nutritional epidemiology requires valid assessment of individual exposure to food-borne factors.
• Current dietary assessment tools are often simplistic, placing a significant cognitive burden on subjects.
• Limitations exist in the widespread application of biomarkers for all exposure times and substances.

Purpose of the Study:

• To explore alternative and future approaches for accurate dietary exposure assessment in nutritional epidemiology.
• To highlight the potential of technology-enhanced subjective dietary assessment methods.
• To identify computer-assisted self-interviewing (CASI) as a promising future approach.

Main Methods:

• Review of current subjective dietary assessment tools and their limitations.
• Discussion of the role and limitations of biomarkers of exposure (external, internal, target tissue).
• Exploration of technological advancements in subjective methods, including audio and visual aids.
• Emphasis on automated data collection and validation features.

Main Results:

• Current subjective methods are limited by reliance on memory and interpretation, impacting data validity.
• Biomarkers are valuable but currently cover only a limited range of exposures.
• Technological integration, such as audio and visual aids, can overcome literacy and language barriers.
• Automated checks enhance data completeness and accuracy.

Conclusions:

• The future of dietary assessment in nutritional epidemiology lies in developing technologically advanced subjective methods.
• Computer-assisted self-interviewing (CASI) offers a potentially economic and cognitively supportive solution.
• CASI can improve the accuracy and efficiency of assessing food-borne exposures.