Research. Education. Action.

We are the leading scientific membership organization advancing the science-based understanding of the causes, consequences, prevention and treatment of obesity in order to improve the lives of those affected.

The Obesity Society is a scientific membership organization. We are dedicated to improving people’s lives by advancing the science-based understanding of the causes, consequences, prevention and treatment of obesity.
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MEMBER BENEFIT

Connect with TOS's Community of Obesity Experts

– FREE to members
– Monthly starting January 2023
– Cutting-edge science from leading experts

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TOS Review Course for the ABOM Exam OnDemand

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Earn up to 17.5 Group One credits

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MEMBER BENEFIT

For TOS Student & Early Career Members

– FREE monthly mentorship advice from leading obesity experts
– Small groups connect early and senior career members
– Enhance learning and career advancement

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On-Demand CME Courses

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Medical Mgmt of the Metabolic-Bariatric Surgery Patient
Personalized Obesity Management
Pediatric Obesity

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ObesityWeek® 2024
November 2-6

Research. Education. Action.

We are the leading scientific membership organization advancing the science-based understanding of the causes, consequences, prevention and treatment of obesity in order to improve the lives of those affected.

The Obesity Society is a scientific membership organization. We are dedicated to improving people’s lives by advancing the science-based understanding of the causes, consequences, prevention and treatment of obesity.
Access Journal

TOS Review Course for ABOM Exam OnDemand

LEARN MORE

On Sale Now
Earn up to 17.5 Group One Credits

On-Demand CME Courses

Medical Mgmt of the Metabolic-Bariatric Surgery Patient
Personalized Obesity Management
Pediatric Obesity

READ MORE

Grand Rounds

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MEMBER BENEFIT
Expert Obesity Science
Starting January 2023

Consensus Statement on Obesity

In 2022, the leading US organizations with a primary focus on obesity came together with the intention of addressing the various roadblocks that they each faced in addressing efforts to improve access to obesity treatment and the reduction of the stigma and bias surrounding this disease. The organizations were: The Obesity Society, the Obesity Action Coalition, the Obesity Medicine Association, the American Society for Metabolic and Bariatric Surgery, the Stop Obesity Alliance, and the Academy of Nutrition and Dietetics. As part of our discussion, we agreed that it would be beneficial to come to a consensus on the definition of obesity. Our discussions led us to develop the consensus statement below to give us a shared starting point for how we talk about obesity, and which is consistent with how we discuss other chronic diseases. As the core organizations that address obesity, we worked together to write this statement and have agreed to use it as the central tenet in our communications around obesity.

Consensus Statement

Obesity is a highly prevalent chronic disease characterized by excessive fat accumulation or distribution that presents a risk to health and requires lifelong care. Virtually every system in the body is affected by obesity. Major chronic diseases associated with obesity include diabetes, heart disease, and cancer.

The body mass index (weight in kg/height in meters2) is used to screen for obesity, but it does not displace clinical judgement. BMI is not a measure of body fat. Social determinants, race, ethnicity, and age may modify the risk associated with a given BMI.

Bias and stigmatization directed at people with obesity contributes to poor health and impairs treatment.

Every person with obesity should have access to evidence-based treatment.

International Obesity Collaborative

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Getting Connected

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Getting Connected

The Obesity Society connects with experts, government/non-government organizations and the public to:

  • Develop, influence and promote vital policies and public positions
  • Create and implement guidelines and cross-discipline learning, sharing and action that advances healthy behaviors
  • Reduce obesity-related bias

Supporting Interactions

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Supporting Interactions

The Obesity Society works with professionals and various audiences on:

  • Valuable conferences and educational opportunities, including early-career professional development and achievement programs
  • Informative professional/academic and popular publications
  • Essential financial development and support

Increasing Impact

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Increasing Impact

The Obesity Society also helps leaders, investigators and innovators to:

  • Launch and promote needed public health initiatives
  • Translate basic science and clinical trial results into real-world interventions
  • Expand the boundaries of scientific exploration

Looking for an obesity medicine provider in your area?

NEWS YOU CAN USE

Moderate to vigorous physical activity early in the day influences weight management, health outcomes

ROCKVILLE, Md.—Even though epidemiological evidence has been controversial regarding the optimal timing of physical activity for weight management, the hours of 7 a.m. to 9 a.m. appear to be the most favorable time of day to enhance the association between daily moderate to vigorous physical activity and obesity, according to a new analysis published in Obesity, The Obesity Society’s (TOS) flagship journal.

Doctors and Advocates Call for Better Testing and Labeling of Drugs for People with Obesity

TAMPA, Fla.Nov. 28, 2023 /PRNewswire/ — The Obesity Action Coalition (OAC) announces the publication of a “Joint Statement in Support of Closing Gaps in the Drug Approval Process and Drug Labeling for People with Obesity.” The statement is co-signed by the OAC, The Obesity Society, the Stop Obesity Alliance, the Obesity Medicine Association, and the American Society for Metabolic and Bariatric Surgery—the leading scientific, medical, and patient advocacy organizations in support of people with obesity.

TOS past presidents comment on SELECT study results

ROCKVILLE, Md.— New findings show that the medication known as Wegovy® (semaglutide) can reduce existing heart disease in patients with obesity by 20%, according to a study co-authored by past presidents of The Obesity Society (TOS) and published in The New England Journal of Medicine. “The SELECT trial is the first study showing that prescription of an anti-obesity medication in people with overweight or obesity and existing cardiovascular disease can be life-saving,” said co-author and TOS Past President Robert F. Kushner, MD, FTOS, professor, Departments of Medicine and Medical Education, Northwestern University Feinberg School of Medicine, Chicago, Ill.

Country’s Leading Obesity Care Organizations Develop Consensus Statement on Obesity

Six U.S. organizations dedicated to the prevention and treatment of obesity collaborated to develop a consensus statement on obesity, a complex, chronic disease that impacts nearly 42% of adults and 19% of children and adolescents. This unified effort aims to address the various roadblocks that the organizations face when addressing efforts to improve access to obesity treatment and reduce weight stigma and bias surrounding the disease.

RESEARCH GRANTS

Promoting and rewarding new ideas in obesity research.

AWARDS

Recognizing excellence in research, clinical practice, mentoring, and public service.

INFORMATION FOR HEALTH CARE PROVIDERS & PATIENTS

Patient Information Pages

RESEARCH & CLINICAL RESOURCES

Supplying the latest news about the entire obesity field.