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Practice Locations

Children's Hospital Colorado Anschutz Medical Campus
13123 East 16th Ave Aurora, CO 80045


Jill Kaar, PhD

Doctor of Philosophy

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Jill Kaar, PhD

Doctor of Philosophy








Pediatric Endocrinology

Clinic Phone



Practice Locations

Children's Hospital Colorado Anschutz Medical Campus
13123 East 16th Ave Aurora, CO 80045



  • Pediatric Endocrinology

Undergraduate Schools

BS, University of Pittsburgh (PA) (2002)

Graduate Schools

MS, University of Pittsburgh (2003)

PhD, University of Pittsburgh (2007)


University of Cambridge (England) (2010)

Academic Pediatric Association (APA), Member

AHA Council on Lifestyle and Cardiometabolic Health, Member

American Heart Association (AHA), Member

American Society for Nutrition (ASN), Member

Pediatric Endocrine Society (PES), Member

Sleep Research Society (SRS), Member


Research Institute Pilot Award (2019)

Building Resilience for Healthy Kids (2019)

Sleep, Insulin Sensitivity, and Weight in Adolescents Post-Bariatric Surgery: Sleep-PBS Study (2019)

Research Interests for Patients

As a behavioral epidemiologist, I study how health behaviors (i.e., sleep, diet, and activity), impact the health (i.e., obesity, type 2 diabetes (T2D), early risk factors for cardiovascular disease) and well-being (i.e., indicators of mental health, depression, anxiety) of children and adolescents. I use observational methods via both quantitative and qualitative methodologies to first identify key associations with health behaviors and disease risk, and then use these findings to guide intervention strategies with potential for widespread dissemination and implementation. At this time, I am principal investigator for three active intervention protocols that use both clinical and school-based designs to change behaviors of children and adolescents. All active protocols have a sleep intervention component and are focused on improving mental and/or physical health of pediatric populations. I have worked in the field of pediatric weight management for almost fifteen years. First, as a dietician at a children’s hospital outpatient weight management clinic and on others’ research protocols and now I am the principal investigator for my own research studies targeting health outcomes (i.e., weight loss, prevention of T2D) and well-being (i.e., building resilience, coping skills, decreasing symptoms of depression and anxiety) in pediatric populations. My primary research focus is examining the mediating effect of sleep duration on the relationship between health behaviors, diet and activity, and overall health in children and adolescents.

information for referring providers

Referral Contact Phone: 720-777-1234