What Are the Challenges in Studying Dietary Changes?
Studying dietary changes poses several challenges:
- Measurement Error: Self-reported dietary data can be prone to recall bias and underreporting, especially for socially undesirable foods. - Complexity of Diet: Diet is complex and multifaceted, making it difficult to isolate the effects of individual nutrients or foods. - Longitudinal Data: Long-term dietary data is needed to understand the effects on chronic diseases, but such data can be difficult and expensive to collect.
