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EFFECTS OF MENSTRUAL CYCLE AND BIOFLAVONOID CONSUMPTION ON CIRCADIAN RHYTHM **

Abstract

The circadian rhythm is the biological clock that regulates sleeping patterns, body temperature, and blood pressure. It is well characterized that blood pressure and body temperature increase throughout the day; this is regulated in part by the period gene, which is a member of the per/arnt/sim family. The AhR is also a member of this family and is activated by a variety of ligands. Bioflavonoids, commonly found in fruits and vegetables, are known ligands of the AhR. In this study we are examining two factors and their effects on the circadian rhythm: bioflavonoid consumption level and progression in the menstrual cycle. We observed ten female students between the ages of 18 and 26 over the course of five weeks and recorded heart rate, blood pressure, and body temperature. Measurements were taken using a blood pressure cuff and forehead thermometer twice a day for two days a week. Participants were required to fill out a health form and keep a food diary to determine bioflavonoids consumption levels and the timing of their menstrual cycle. Analysis of data will compare the measured physiological factors of the participants and data collected on the health form to identify any correlations. The purpose of this study is to determine if the menstrual cycle or bioflavonoid consumption has any effect on the circadian rhythm.

Acknowledgements

YHC Undergraduate Research Initiative

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