Advancing Obesity Science.
Transforming Care. Improving Lives.
For more than 40 years, The Obesity Society (TOS) has been the leading scientific authority driving progress in obesity research, evidence-based care, education, and advocacy. Together with our members and partners, we translate rigorous science into real-world solutions that improve health outcomes for people living with obesity.
Welcome to The Obesity Society
Where Science Becomes Better Care
The Obesity Society (TOS) is the trusted home for obesity science—bringing together researchers, clinicians, educators, and advocates to accelerate discovery, remove barriers to care, and elevate the quality of obesity treatment worldwide.
Our members lead groundbreaking research, develop clinical best practices, and transform patient experiences by turning data, lived experience, and innovation into meaningful action.
Welcome to The Obesity Society
Where Science Becomes Better Care
The Obesity Society (TOS) is the trusted home for obesity science—bringing together researchers, clinicians, educators, and advocates to accelerate discovery, remove barriers to care, and elevate the quality of obesity treatment worldwide.
Our members lead groundbreaking research, develop clinical best practices, and transform patient experiences by turning data, lived experience, and innovation into meaningful action.
Mission-Driven Impact
Turning Evidence into Impact
The mission of The Obesity Society (TOS) is to advance the science, prevention, and treatment of obesity through promoting excellence in research, clinical care, education, and policy. We support a multidisciplinary professional community that fosters collaboration and networking across all fields related to obesity. TOS welcomes members of all backgrounds. We promote equitable access to evidence-based care and work with partners to eliminate stigma and discrimination related to obesity.
Progress is happening.
Mission-Driven Impact
Turning Evidence into Impact
The mission of The Obesity Society (TOS) is to advance the science, prevention, and treatment of obesity through promoting excellence in research, clinical care, education, and policy. We support a multidisciplinary professional community that fosters collaboration and networking across all fields related to obesity. TOS welcomes members of all backgrounds. We promote equitable access to evidence-based care and work with partners to eliminate stigma and discrimination related to obesity.
Progress is happening.

Core Strengths
Why The Obesity Society
Membership-Focused
A Place Where You Belong. Where Progress Happens.
TOS is more than a professional society. It’s a trusted, inclusive space where diverse, brilliant, and passionate individuals come together with a shared commitment to improving lives through science.
Members describe TOS as:
- A source of pride and purpose
- A place of rigorous, credible knowledge
- A collaborative community—“the moment I found my tribe”
Here, innovation thrives. Partnerships grow. And meaningful change is created—together.

HIGHLIGHTED MEMBER
Wayne Ho, MD
Obesity Specialist
Los Angeles, California

HIGHLIGHTED MEMBER
Robyn Pashby, PhD
Clinacl Psychologist
Washington, DC

HIGHLIGHTED MEMBER
Faith Anne Heeren, PhD
Researcher, Health Outcomes Implementation
Winston-Salem, North Carolina

Take the Next Step
Get Involved.
Join Today.
As a member of the TOS community, you are part of a global, multidisciplinary network of researchers, clinicians, educators, and advocates working to address one of the most complex and pressing public health challenges of our time.
MEMBER BENEFITS:
- Education & Resources: Access evidence-based research, clinical guidelines, webinars, and on‑demand learning, including Obesity and Obesity Science & Practice journals.
- Networking & Collaboration: Connect with leading experts through committees, sections, and events like ObesityWeek®.
- Advocacy & Policy: Support efforts to advance recognition of obesity as a chronic disease and expand access to quality care.
- Professional Development: Build your career with leadership opportunities, mentorship, and flexible On-Demand programs for all career stages.
REAL-LIFE RESULTS
We Generate Results for Our Network
GET CONNECTED
Check Out Our Upcoming Events
Get connected with the latest developments in obesity research, care, and policy. Our upcoming events bring together leading experts, researchers, clinicians, and advocates through conferences, webinars, workshops, and virtual learning opportunities.
Explore our upcoming events and find opportunities to learn, connect, and lead.



