Hormonal contraception is used by millions of women globally. Despite being readily available for several decades, the implications of these medications on mood and stress processes are still not fully understood. Thus, the goal of the current investigation was to examine mood and diurnal cortisol patterns among women using hormone contraceptives compared to naturally cycling women in the follicular or luteal phase.Women (N = 191) in first-and second-year university were asked to complete several selfreport questionnaires assessing depressive, anxiety, and stress symptoms, and to provide diurnal salivary samples for cortisol determination. While few group differences were found in mood and cortisol outcomes, distinct correlations were apparent according to hormonal contraceptive use and menstrual cycle phase. Additionally, hormonal contraceptive use moderated the relation between cortisol profiles and mood outcomes.These results may indicate that the expected linkages between elevated depression symptoms and cortisol are dysregulated among hormonal contraceptive users. This study contributes to a growing body of evidence that highlights complex relationships between hormonal contraceptive use, mood outcomes, and hormone systems.
HORMONE CONTRACEPTIVE USE IN YOUNG WOMENiii Acknowledgements I would like to sincerely thank my wonderful supervisors for the time, care, and dedication they provided me as I navigated this challenging degree. Dr. Robyn McQuaid, you are so patient, knowledgeable, and kind, and I am forever grateful to you for accepting me as a graduate student in your lab. Dr. Hymie Anisman, your expertise, wisdom, and support throughout my research and during discussions of my future aspirations were always welcome encouragement. You have both played an instrumental role in the researcher I am today, and I have learned so much from both of you. I would also like to thank my committee members, Dr. Alfonso Abizaid and Dr.Argel Aguilar-Valles, for your valuable feedback on this project, and for always being generous with your knowledge and time. Thank you to my external examiner, Dr. Renate Ysseldyk, for joining my committee, and to Dr. Kim Matheson, for chairing my defense.To the McQuaid lab, I remind myself everyday of how fortunate I am to work with such an amazing group of people in a place where everyone's eagerness to learn, collaborate and conduct fascinating research truly shines. Ayeila Daneshmend, you have always gone above and beyond for me, and I am not sure where I would be without your continuing support and friendship throughout my degree. Dana Jarkas, you are always willing to help me with anything, and for that I am so very grateful. Thank you for always being there, and I am lucky to have learned from you.To my family, Mum, Dad, and Sam, thank you for always being there for my highs and lows, and for your unwavering support in my success, future, and career. To my love, Eric, for always being by my side and keeping me grounded and happy, thank you. To the late Skinner, you were always my ...