The goal of this interventional study is to test the influence of food intake with characteristics of the urinary bladder. The main questions it aims to answer are: * How does food intake modify the characteristics of urothelial cells? * Does change of specific diet regimes influence biomarker characteristics in urine? Participants will follow specific diet regime for a given time period. After completion of this period biomarker assessment is performed. Thereafter the participants follow an opposite diet regime for the same time period with identical biomarker assessment at the end. Biomarkers within the participants and between the diet regimes will be compared to investigate the influence of food intake on the urinary bladder.
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Change in molecular profile of urothelial cells
Timeframe: 12 weeks