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Limitations of Weak Observational Data
This chapter explores the limitations of relying on weak observational data in nutrition studies and emphasizes the need for randomized control clinical trials to establish cause and effect. It discusses the unreliability of data collected through food frequency questionnaires and the influence of prevailing views on dietary reporting. Additionally, it highlights government-funded trials that failed to prove the effectiveness of replacing saturated fat with vegetable oils in preventing heart disease or death.