Skip to Main Content

INFORMATION FOR

    Ania Jastreboff, MD, PhD

    DownloadHi-Res Photo

    About

    Titles

    Professor of Medicine (Endocrinology)

    Director, Yale Obesity Research Center (Y-Weight); Co-Director, Yale Center for Weight Management; Medical Director, Yale Stress Center

    Biography

    Ania M. Jastreboff, MD, PhD is the Harvey and Kate Cushing Professor of Medicine and Professor of Pediatrics at Yale School of Medicine. Dr. Jastreboff is a physician-scientist, endocrinologist, and international thought leader in the scientific development and clinical application of novel anti-obesity pharmacotherapeutics revolutionizing obesity treatment. As founding director of the Yale Obesity Research Center (Y-Weight), she is leading and shaping pivotal landmark studies of dual- and triple-receptor hormone agonists and NIH-funded studies investigating the physiology of obesity. She has served as lead investigator and author for trials investigating novel nutrient-stimulated hormone (NuSH)-based therapies for obesity including dual hormone receptor agonist, tirzepatide, a GIP/GLP-1 receptor agonist (Jastreboff, et al., NEJM, 2022 and NEJM, 2024), triple hormone receptor agonist, retatrutide, a GIP/GLP-1/Glucagon receptor agonist (Jastreboff, et al., NEJM, 2023), and a monthly monoclonal antibody peptide conjugate, maridebart cafraglutide, a GIP receptor antagonist GLP-1 receptor agonist (Jastreboff, et, al., NEJM, 2025). Trained in both adult endocrinology and pediatric endocrinology, and attaining board certification in five specialties (endocrinology, pediatric endocrinology, obesity medicine, internal medicine, and pediatrics), she has helped to develop Obesity Clinical Practice Guidelines, served on the Board of Governance for The Obesity Society (TOS), and as a director of the American Board of Obesity Medicine, and serves as co-director of the Yale Center for Weight Management, where she sees patients. She is a highly sought after speaker, teaching internationally, nationally, and locally. She is a compassionate advocate for patients with obesity, from grass-roots patient groups to interviews with Ms. Oprah Winfrey on CBS Sunday Morning, TODAY, and The View. She is also a New York Times Best-Selling author of Enough: Your Health, Your Weight, and What It’s Like to Be Free by Ania M. Jastreboff, MD, PhD and Oprah Winfrey.



    Videos of Dr. Jastreboff speaking with Ms. Oprah Winfrey about obesity (YouTube podcast)


    Video of Dr. Jastreboff
    speaking at the Lincoln Center about the biology of obesity and anti-obesity medications for the Yale For Humanity Illuminated event (NYC - January 2025)


    Videos of Dr. Jastreboff and colleagues from the NEJM about:

    - What causes obesity: https://www.nejm.org/doi/full/...

    - Supporting patients with obesity: https://www.nejm.org/doi/full/...

    - Medications and surgery for obesity treatment: https://www.nejm.org/doi/full/...

    Yale video with Dr. Jastreboff about anti-obesity medications and the biology of obesity.

    Clinically, Dr. Jastreboff specializes in sophisticated use of anti-obesity medication combinations to help patients reach their weight and health goals.


    Recent misinformation has been circulating online regarding a so-called "pink salt trick" for weight loss. It is not medically supported, and it has no connection to Dr. Ania Jastreboff or Yale. Videos of Dr. Jastreboff purporting to endorse this product are fraudulent and have been AI generated.

    Last Updated on March 01, 2026.

    Appointments

    Other Departments & Organizations

    Education & Training

    Student - Yale Advanced Emerging Leaders
    Yale University (2023)
    Yale Public Voices Fellowship
    Yale University (2022)
    Clinical Scholar
    Yale University School of Medicine (2013)
    YCCI Clinical Research Scholar
    Yale School of Medicine (2013)
    PhD
    Yale University Graduate School of Arts and Sciences, Investigative medicine (2012)
    Neuromanaging in Psychiatry
    Yale School of Medicine (2011)
    Postdoctoral Fellowship
    Yale School of Medicine (2011)
    Postdoctoral Fellowship
    Yale School of Medicine (2011)
    Food Policy and Science
    Yale University (2010)
    Learning to Mentor the next generation of scientists
    Yale School of Medicine (2009)
    Nutrition and Chronic Disease
    Yale University (2009)
    Chief Resident
    University of Maryland (2006)
    Residency
    University of Maryland School of Medicine (2006)
    Intern
    University of Maryland (2003)
    MD
    University of Maryland at Baltimore (2002)
    BA
    Bucknell University, Art History/Major, Music/Minor. Magna cum laude (1998)

    Research

    Overview

    obesity; obesity pharmacotherapy

    Medical Research Interests

    Obesity; Weight Loss

    Public Health Interests

    Obesity

    Research at a Glance

    Yale Co-Authors

    Frequent collaborators of Ania Jastreboff's published research.

    Publications

    2026

    2025

    Academic Achievements & Community Involvement

    Activities

    • activity

      Obesity - National Childhood Obesity Awareness Month Special Issue

    • activity

      Diabetes Care

    • activity

      The Obesity Society

    • activity

      American Diabetes Association (ADA)

    • activity

      American Association of Clinical Endocrinology (AACE) and American College of Endocrinology

    Honors

    • honor

      New York Times Best-Selling Author

    • honor

      Clinician of the Year Award, The Obesity Society

    • honor

      American Board of Obesity Medicine (ABOM), Board of Directors (2022-2025)

    • honor

      Nominated for the Leonard Tow Humanism in Medicine Award Yale Teaching

    • honor

      NIH/NIDDK K23 Mentored Patient-Oriented Research Career Development Award

    Clinical Care

    Overview

    Ania M. Jastreboff, MD, PhD, is an adult and pediatric endocrinologist with expertise in obesity medicine and weight management. She cares for patients who have prediabetes, insulin resistance, metabolic syndrome, and type 1 and type 2 diabetes.

    Dr. Jastrebroff, who is director of the Yale Obesity Research Center (Y-Weight), says she empathizes with patients who struggle to lose weight or maintain weight loss. “Carrying excess weight and having obesity is not a lifestyle choice. Obesity is a chronic disease and should be treated with the same vigor and integrity as other chronic diseases,” she says. “We are in the infancy of our understanding of the mechanisms that underlie obesity. Many novel treatments are under development, including new anti-obesity medications, endoscopic procedures, and the refining of behavioral and surgical interventions.”

    An assistant professor of medicine (endocrinology) and of pediatrics (endocrinology) at Yale School of Medicine, Dr. Jastrebroff says one of her goals is to conduct clinic research that will lead to better treatments for obesity and also have a clear public health impact in mitigating the obesity “pandemic.”


    Recent misinformation has been circulating online regarding a so-called "pink salt trick" for weight loss. It is not medically supported, and it has no connection to Dr. Ania Jastreboff or Yale. Videos of Dr. Jastreboff purporting to endorse this product are fraudulent and have been AI generated.

    Clinical Specialties

    Obesity Medicine; Pediatric Endocrinology & Diabetes; Diabetes Medicine & Management; Endocrinology

    Fact Sheets

    Board Certifications

    • Obesity Medicine

      Certification Organization
      AB of Obesity Medicine
      Original Certification Date
      2016

    Yale Medicine News

    Get In Touch

    Contacts

    Appointment Number

    Administrative Support

    Locations

    • Patient Care Locations

      Are You a Patient? View this doctor's clinical profile on the Yale Medicine website for information about the services we offer and making an appointment.