Skip to Main Content
Yale School of Medicine
YSM Home

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

Education

PhD
Yale University Graduate School of Arts and Sciences, Investigative medicine (2012)


MD
University of Maryland at Baltimore (2002)


BA
Bucknell University, Art History/Major, Music/Minor. Magna cum laude (1998)


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 clinically active physician-scientist 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 & 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, she serves on the Board of Governance for The Obesity Society, as a director on the American Board of Obesity Medicine, developing Obesity Clinical Practice Guidelines, and as co-director of the Yale Center for Weight Management, where she sees patients and teach trainees. 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. She is also an author – Enough: Your Health, Your Weight, and What It’s Like to Be Free – Ania M. Jastreboff, MD, PhD and Oprah Winfrey.

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

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/...

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)


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 November 20, 2025.

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 and cancer; anti-obesity pharmacotherapy; cancer prevention and risk reduction

Medical Research Interests

Obesity; Weight Loss

Public Health Interests

Obesity

  • ORCID

    0000-0003-1446-0991
  • Lab Whisk Cup Streamline Icon: https://streamlinehq.com

    Y-Weight: Yale Obesity Research Center

    Investigating novel pharmacological therapeutics for obesity treatment and probing the mechanisms of obesity in translational physiology studies

    View Lab Website

Research at a Glance

Yale Co-Authors

Frequent collaborators of Ania Jastreboff's published research.

Publications

2025

See All Publications

Academic Achievements & Community Involvement

Activities

  • activity

    The Obesity Society

    2017 - PresentPeer Review Groups and Grant Study SectionsReviewer
  • activity

    The Endocrine Society

    2019 - PresentProfessional OrganizationsCommittee Member
  • activity

    ADA (American Diabetes Association)

    07/01/2019 - PresentMeeting Planning and ParticipationMember
  • activity

    Obesity - National Childhood Obesity Awareness Month Special Issue

    06/01/2021 - PresentJournal ServiceAssociate Editor
  • activity

    Diabetes Care

    2022 - PresentJournal ServiceAssociate Editor
View full list of activities

Honors

  • honor

    Clinician of the Year Award, The Obesity Society

    01/02/2023National AwardThe Obesity Society
  • honor

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

    05/01/2022National AwardABOM
  • honor

    Nominated for the Leonard Tow Humanism in Medicine Award Yale Teaching

    01/01/2020Yale University AwardYale University
  • honor

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

    05/01/2014National Award
  • honor

    Young Physician-Scientist Award

    10/15/2013National AwardAmerican Association for Clinical Investigation (ASCI)
View full list of honors

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

See All News On Yale Medicine

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.

View Doctor Profile

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.

    See Patient Care Locations