Our Research
Everyday life stressors and community level burdens have been shown to alter brain biology. Psychoendocrinology literature shows compelling evidence that stress-induced changes to the body may contribute to obesity and metabolic diseases. Specifically, psychosocial and environmental stressors can disrupt hypothalamic-pituitary-adrenal (HPA) axis activity, which in turn will alter cortisol levels throughout the day.
Disrupted cortisol patterns have been shown to be associated with increased risk for obesity and type 2 diabetes. Work in this area of research has implications for public health and health care practitioners by raising awareness of health risks associated with stress and the need for stress-reduction programs and interventions.
The overarching research aim of the MeSA pilot study to understand the complex relationship between various stressors, HPA-axis activity, and body fat. In this effort, we will characterize perceived, community, and biological stress and assess their relationships with body fat measures.
Since our lab is grounded in clinical epidemiological design, we only use quantitative methods. Our data are collected via self-reported surveys, health behavior assessments, and physiological measures from biospecimens.
Our Team
Professor
Claudia Toledo-Corral is a Professor in the Department of Health Sciences at CSUN and an Adjunct Professor at the University of Southern California (USC). Dr. Toledo-Corral has a background in biological sciences, health psychology, and anthropology/cultural studies, and obtained her M.P.H. and Ph.D. in Preventive Medicine from USC. She has a long-standing research agenda in the field of obesity and associated disease risk in minority populations. Dr. Toledo-Corral’s past work includes the study of the biological underpinnings of pediatric obesity and diabetes risk, assessing the efficacy of clinical diagnostic methods for diabetes, and examining the physiological role of stress on obesity and cardiometabolic risk. To date, she has mentored, and published with, dozens of students at the undergraduate and graduate level (MPH and PhD) at CSUN, CSU Los Angeles, University of Michigan, and USC.
My journey in research began during my undergraduate studies at CSU San Marcos, where I was
an American Psychological Association Research Scholar and a Ronald E. McNair Scholar.
During this time, I conducted research examining the impact of sociocultural stress on fetal
programing and perinatal maternal mental health among women of Mexican descent. This
experience solidified my interest in understanding the effects of sociocultural stressors within
marginalized communities, particularly the Latinx population.
As a graduate student and a Chancellor’s Doctoral Incentive Program Scholar, my research
expanded to focus on stress processes and protective factors through the lens of health
psychology and developmental science, particularly among Latinx adolescents. My work aims to
deepen our understanding of the relationship between stress and health within broader systems of
oppression.
Currently, as a postdoctoral fellow, I hope to continue my work with marginalized communities
and further develop my expertise on the health-related outcomes of discrimination. As a new
member of the Metabolism and Stress Assessment Lab, I am excited to collaborate with a diverse
time and engage with students with a broad range of expertise, to advance this important area of
research.
MPH Applied Epidemiology
Breana is a graduate student of the Master of Public Health student in the Applied Epidemiology program at California State University, Northridge. She also holds a B.S. in Public health from CSUN. Before joining the lab, Breana’s research interest involved investigating how Environmental pollutant exposures are associated with cardiovascular risk among ethnic minority youth, infants, and expecting mothers. Specifically, she is interested in how air pollutants may alter biological mechanisms and development and if relationships differ among biological sex, gender, ethnicity, and age. Breana’s future goals involve pursuing a doctoral degree in Environmental Epidemiology and a career in academia.
B.S., Cell & Molecular Biology
Joshua A. Vazquez is a student in the Bachelor of Science in Cell and Molecular Biology program, double minoring in Chemistry and Public Health at California State University, Northridge (CSUN). With training across the basic sciences and applied epidemiological research, he is interested in understanding the biological and social factors that shape cardiometabolic disease risk. Ultimately, Joshua hopes to pursue MD/PhD training and become a physician-scientist studying cardiovascular disease, human genetic epidemiology, and health disparities while teaching at the university level.
Joshua serves as Project Coordinator for the Allostatic Load in Los Angeles Youth (ALLY) Study. Since joining the lab in October 2022, he has held several positions, including Research Assistant, Social Media Coordinator, and full-time Laboratory Coordinator. Through these roles, he facilitates participant appointments, trains research assistants in study design and protocol implementation, supports laboratory compliance by coordinating hazardous waste disposal with Environmental Health and Safety, and prepares abstracts for conference submission.
From July 2024 to May 2026, Joshua was a Fellow in the National Institutes of Health Undergraduate Research Initiative for Student Enhancement Program under Dr. Maria Elena Zavala. As part of the program, he completed an undergraduate thesis titled “Dietary Fat Intake in Young Adults: Associations with Body Composition and Inflammation in the Context of Emerging Dietary Guidelines,” under the mentorship of Dr. Claudia Toledo-Corral. His thesis examined the relation between saturated fat intake and waist circumference, body fat percentage, and C-reactive protein concentration, respectively, among young adults in the ALLY Study.
In June 2026, Joshua was named as a University Scholar through CSUN’s Northridge Scholarship Program, the university’s most prestigious scholarship program. Beyond his research, Joshua is actively involved in student leadership, mentorship, and science engagement across campus. He serves on the executive boards of the Chemistry and Biochemistry Club and Microbiology Student Association. Joshua has also mentored seven first-time freshmen through Matador Connect, a peer mentoring initiative designed to ease the transition to college.
B.S., Public Health
Dhnzl Dreyl B. Ocampo is a third-year undergraduate public health student at California State University, Northridge. Dhnzl’s research interests include how limited English proficiency functions as a social determinant of health and how chronic diseases can be prevented or managed through lifestyle changes. As a research assistant in the MeSA Lab, Dhnzl hopes to gain greater insight into how social and environmental stressors impact chronic disease risk. Upon graduating, Dhnzl plans to continue his education by applying to medical school.
Chiara is a graduate student in the Master of Public Health program with a concentration in Applied Epidemiology at California State University, Northridge. She is particularly interested in how COVID-19 exacerbated food insecurity and the way people cope with the lack of access to healthy nutrition. Chiara is also interested in looking at how the social stress of post COVID-19 symptoms alters one relationship with food and gives rise to type 2 diabetes. Her long-term goals consist of pursuing a doctoral degree in the field of infectious disease epidemiology and becoming a public health researcher.
Yunmi is a graduate student in the Master of Public Health in Applied Epidemiology program at California State University, Northridge. Her interest in public health began through her work at a Federally Qualified Health Center, where she supported Korean immigrant patients facing language barriers, limited health information, and challenges accessing culturally competent care. She is particularly interested in how data, research, education, and community outreach can be used to identify health disparities and improve access to preventive health services for underserved communities. With professional experience in continuing medical education at Kaiser and UCLA, Yunmi has developed a strong appreciation for the role of education in improving healthcare practices and patient outcomes. Her long-term goals include working as a research data analyst, applying biostatistical and epidemiological methods to evaluate public health programs, and contributing to evidence-based interventions that improve community health.
Lauren is a Master of Public Health in Applied Epidemiology student at California State University, Northridge (CSUN). She earned her B.S. in Microbiology and Biotechnology from CSUN and currently works in clinical trials supporting molecular diagnostics as an associate scientist. She serves as a graduate research assistant in the Metabolism and Stress Assessment (MeSA) Lab, working on the Allostatic Load in Los Angeles Youth (ALLY) study. Her research interests center on the shared biological mechanisms linking metabolic disorders, such as Type 2 Diabetes, with neurodegenerative diseases such as Alzheimer’s disease. As a first‑generation college student, she was awarded the Associated Students Scholarship in Fall 2025 in recognition of her academic achievement and commitment to advancing public health research. Her future goals include pursuing a doctoral degree in Epidemiology and developing a career that bridges industry and academia, with interests in pharmacoepidemiology and clinical trials.
Aurora is a graduate student in the Master of Public Health in Applied Epidemiology program at California State University, Northridge. She received her B.S. in Public Health and her Minor in Human Lactation from CSUN and is a Certified Health Education Specialist and Certificated Lactation Educator. Aurora has a variety of public health interests, including political health, maternal and infant health, and geriatrics, with an emphasis on research, biostatistics, and data analysis.
Using data from the ALLY study, Aurora will be investigating how individuals’ experiences with politics affects their overall health, including risk for Type 2 Diabetes, perceived stress, sleep quality, and somatic symptoms. Receiving her minor in lactation exposed her to health disparities experienced by dyads and a passion for bridging those gaps in healthcare through increasing access to healthcare and health education. Her undergraduate internship was in the Outpatient Lactation Center at Henry Mayo Newhall Hospital, focusing on postpartum education. Aurora has a passion for working with older adults and currently works as an Assistant Resident Services Coordinator and Medication Technician for an assisted living facility in Northridge. She would love to explore the field of preventative medicine for older adults by tracking chronic disease patterns and providing health education. She plans to pursue a doctoral degree in epidemiology to further her knowledge and scope of practice in preventive medicine.
Nicole Ayala is a Master of Public Health in Community Health Education student at California State University, Northridge (CSUN). She graduated with a Bachelor of Science in Biotechnology and Cell and Molecular Biology from CSUN. During her academic career, Nicole gained experience in computational and simulation-based research at Princeton University, where her work involving genetic modifications of the protein TDP-43 deepened her interest in the molecular mechanisms underlying neurodegenerative diseases and their broader impact on aging populations. She currently serves on the 2026–2027 board of CSUN’s Master of Public Health Student Association (MPHSA) as Webmaster, a role that strengthens her commitment to accessible science communication, improved health literacy, and community engagement. Her research interests focus on biological and environmental factors that may contribute to chronic diseases, ranging from neurodegenerative conditions to diabetes, particularly among underserved and aging populations. Nicole is especially interested in community-focused research that examines gender-based disparities, medical bias, and barriers to care while promoting health equity, improved health outcomes, and representation in medicine. Her future goals include pursuing an M.D./Ph.D. pathway in Family Medicine with a specialization in Geriatrics.
Pamela Troy is a graduate student pursuing her Master of Public Health in Applied Epidemiology at CSUN. Her passion for public health has always encompassed healthcare accessibility, health equity, and supporting vulnerable and at-risk populations. Born in Guatemala, and raised in Los Angeles County, California her interests stem from her personal challenges and observations across disadvantaged communities, making it her lifelong vocation to support these marginalized communities to improve their overall health and vitality. With a diverse interdisciplinary background in accounting, hospitality, and community service engagement, she’s looking to apply past varied experiences while cultivating new skills with the Metabolism and Stress Assessment Lab team. She is enthusiastic in deepening her understanding and gaining specialized skills in data management/analysis and overall research to contribute to her mission in advancing health equity.
Nick is a graduate student in the Master of Public Health in Applied Epidemiology program at CSUN, where he began his interest in public health by pursuing a Bachelor of Science in Public Health. His public health interests include mental health, HIV prevention, and chronic and infectious disease research. His long-term goals are to further develop skills as a data analyst and research assistant. He currently serves as a graduate research assistant on a behavioral research study and is now gaining experience in the Metabolism and Stress Assessment (MeSA) Lab, working on the Allostatic Load in Los Angeles Youth (ALLY) study.
Sandy Amezquita is a graduate student in the Master of Public Health program with a concentration in Applied Epidemiology at California State University, Northridge (CSUN). She earned her Bachelor of Science in Nutritional Science from California State University, Los Angeles. Before transitioning into the health sciences, Sandy completed culinary training in Baking and Pastry Arts, where she developed an interest in the relationship between food, nutrition, and health.
Her research interests include nutrition science, dietary patterns, chronic disease prevention, and population health. She is particularly interested in examining how nutrition-related interventions can improve health outcomes and reduce chronic disease risk. Sandy’s long-term goals are to become a Registered Dietitian Nutritionist (RDN) and pursue a career in nutrition research, food research and development, and public health, contributing to the development of healthier food products and advancing evidence-based nutrition.
Jeremy Argueta is a Business Information Systems major at California State University Northridge (CSUN). While at CSUN, He has done research for the Positive Augment Research and Development Lab. Also, he has created, designed, and maintained the website for the Mesa Lab.
Lab Gallery
Our Work
Contact Us
Location
18111 Nordhoff St, Northridge, CA 91330
Contact us
Phone: 818 677 4937
Email: claudia.toledo-corral@csun.edu