ObesityWeek ’26. Register Today!

ObesityWeek ’26. Register Today!

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

“I became a member because I believe in the mission of TOS. I wanted to be part of the effort to improve people’s lives by advancing science on the causes, consequences, prevention, and treatment of obesity.”

Jamy D. Ard, MD, FTOS

“I’m a member of The Obesity Society because it connects me to a network of the top scientists around the world in the multidisciplinary field of obesity. These colleagues help me bring the best comprehensive approach to the work I do to address the complex disease of obesity.”

Leah Whigham, PhD, FTOS

“TOS opens the door to meeting and socializing with colleagues of a like mind, that’s an invaluable part of my scientific inquiries and professional career.”

Steve Heymsfield, MD, FTOS

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.

Mark your Calendar for
ObesityWeek 2026 in Washington, DC,
November 14-17, 2026!