Disclosure of Genotype Information to Reduce Caffeine Intake in Slow Metabolizers: Findings from a Randomized Controlled Trial on Personalized Dietary Interventions.

Although in the long term a more pronounced decrease in caffeine consumption was observed only in the intervention group, the difference between the groups did not reach statistical significance.

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follow-up were observed, but not in control group, indicating a clear trend of change over time in intervention group The caffeine intake in the study group three years after the intervention (227.94 ± 146.32 mg/day) was significantly lower than at baseline (381.63 ± 237.55 mg/day; p < 0.01).

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