IOS - International Obesity Society

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International Obesity Society (IOS) is a dynamic network of professionals dedicated to advancing the prevention and treatment of obesity and addressing its associated health challenges through research, education and collaboration.

03/08/2026

🌏 A Congress to Remember: IOS 2026 Chengdu & 1st TICOM

From July 30 to August 1, 2026, the city of Chengdu — home of the giant panda and the cradle of Tianfu culture — welcomed nearly 400 of the world's foremost minds in obesity and metabolic medicine, from 30+ countries and regions joined in person, with 86285 people watched online globally. Together, we convened the 2nd International Obesity Society Congress (IOS 2026 Chengdu) & the 1st Tianfu International Congress on Obesity and Metabolism (TICOM).

As Director of the IOS - International Obesity Society, standing before this extraordinary assembly, I was reminded of why we founded this organization: because no single country, no single discipline, can alone turn the tide against the global metabolic crisis.

🤝 A New Era of Global Collaboration

Eight leading institutions — from The Upper Gastrointestinal Surgery Society to Macau's health economics and obesity societies, from IRCAD China to innovators in rehabilitation, medical devices, and nutrition biotechnology — came together to sign the IOS Global Collaboration Memorandum of Understanding. This is not a ceremonial gesture. It is a binding commitment to joint research, talent cultivation, and the translation of discovery into patient care across borders.

🏆 Honoring Excellence

We recognized the very best in our field:

• Prof. Ming-Hua Zheng​ — Excellence in Research Award

• Profs. Rui Tao & Ningli Yang​ — Distinguished Contribution Awards

• Ten outstanding early-career investigators​ — Top 10 Abstracts Awards

To each of you: your work lights the path forward.

🧬 The Science That Moved Us

Four visionary keynotes. Sixteen parallel sessions (23 sessions by sub speciality topics). From the operating room to the laboratory, from AI-powered weight management to the 21-year journey of LGR4 gene discovery, from endoscopic innovations like ESG and POSE 2.0 to the deeply human "A Date with Obesity" TED-style talks — every conversation advanced our shared mission.

👩‍⚕️👨‍⚕️ The Next Generation

We launched specialized training for young bariatric surgeons, established two new IOS Working Groups — on Integrated TCM-Western Medicine in Reproductive Endocrinology and on Body Contouring — and ignited conversations that will shape clinical guidelines for years to come.

💙 A Personal Note

Obesity is not vanity. It is not a personal failing. It is a global health emergency that touches billions. And it will only be defeated by the kind of collaboration, compassion, and scientific rigor that filled every hall of the Chengdu Hilton DoubleTree these past three days.

To every delegate, every sponsor, every volunteer, every member of the IOS family — thank you. Chengdu was not an ending. It was a launchpad.

Together, we move forward. Together, we heal the world. 🌏💪

Wah Yang, MD, Director, International Obesity Society (IOS)

Scientific Program Released! 2nd IOS - International Obesity Society Congress (IOS 2026 Chengdu)https://www.ios.xin/sys-...
25/07/2026

Scientific Program Released! 2nd IOS - International Obesity Society Congress (IOS 2026 Chengdu)
https://www.ios.xin/sys-nd/33.html

Call for Top 10 Abstracts Award!
Please submit and share your work in the 2nd International Obesity Society Congress (IOS 2026 Chengdu) through the IOS website:
https://www.ios.xin/h-col-120.html‍‍

Experts and delegates from around 30+ countries/regions have registered for the congress. Many countries are coveredby the Unilateral Visa Exemption Policies. Please join us with our global friends and colleagues. There are still some slots available.

Visa-free Entry into China:
https://en.nia.gov.cn/n147418/n147463/c183390/content.html

Guidance on Visa Application:
Ministry of Foreign Affairs of the People's Republic of China
https://consular.mfa.gov.cn/VISA

Congress Registration:
https://www.ios.xin/h-col-114.html

Scientific Program:
https://www.ios.xin/sys-nd/33.html

The 2nd International Obesity Society Congress (IOS 2026 Chengdu) is calling for submissions for the

Want to see how it works in the high-volume bariatric center?Pre-Congress Course of TICOM & IOS 2026 Chengdu:Internation...
05/07/2026

Want to see how it works in the high-volume bariatric center?

Pre-Congress Course of TICOM & IOS 2026 Chengdu:
International Obesity Society -Tianfu Metabolic and Bariatric Surgery Specialist Training Program

Date:​ 30th July, 2026 (Pre-Congress Day before IOS 2026 Chengdu)
Location:​ The Third People's Hospital of Chengdu / Designated Training Facilities

Early Bird Registration Close:
July 10, 2026




08:00-09:30 Guided Tour - Outpatient Department and Inpatient Ward
The Third People's Hospital of Chengdu

09:30-12:30 Live Surgery Observation (Theater Viewing)
Hospital Operating Theater

12:30-13:00 Interactive Q&A Session with Surgical Team
Hospital Conference Room

13:00-14:00 Lunch Break (Provided on-site)

14:00-17:00 Hands-On Animal Wet-Lab (Experimental Surgical Procedures on Porcine Models)
Animal Lab Facility
• Laparoscopic Sleeve Gastrectomy
• Laparoscopic Roux-en-Y Gastric Bypass (LRYGB)
• Sleeve Gastrectomy with Transit Bipartition (SG-TB)
• Single Incision Laparoscopic Sleeve Gastrectomy SILSG

17:00-17:30 Certificate Presentation Ceremony
Conference Venue

Registration:

A cancellation charge of USD 60.00 will be applicable for any cancellation made on or before 15 July 2026. No refund will be applicable for cancellations after the date.

Want to see how it works in the high-volume bariatric center in China?Pre-Congress Course of TICOM & IOS 2026 Chengdu:In...
30/06/2026

Want to see how it works in the high-volume bariatric center in China?

Pre-Congress Course of TICOM & IOS 2026 Chengdu:
International Obesity Society -Tianfu Metabolic and Bariatric Surgery Specialist Training Program

Date:​ 30th July, 2026 (Pre-Congress Day before IOS 2026 Chengdu)
Location:​ The Third People's Hospital of Chengdu / Designated Training Facilities

Early Bird Registration Close:
July 10, 2026




08:00-09:30 Guided Tour - Outpatient Department and Inpatient Ward
The Third People's Hospital of Chengdu

09:30-12:30 Live Surgery Observation (Theater Viewing)
Hospital Operating Theater

12:30-13:00 Interactive Q&A Session with Surgical Team
Hospital Conference Room

13:00-14:00 Lunch Break (Provided on-site)

14:00-17:00 Hands-On Animal Wet-Lab (Experimental Surgical Procedures on Porcine Models)
Animal Lab Facility
• Laparoscopic Sleeve Gastrectomy
• Laparoscopic Roux-en-Y Gastric Bypass (LRYGB)
• Sleeve Gastrectomy with Transit Bipartition (SG-TB)
• Single Incision Laparoscopic Sleeve Gastrectomy SILSG

17:00-17:30 Certificate Presentation Ceremony
Conference Venue

Registration:

A cancellation charge of USD 60.00 will be applicable for any cancellation made on or before 15 July 2026. No refund will be applicable for cancellations after the date.

Top 10 Abstracts Wanted! International Obesity Society (IOS) Endorsed Event:Meet up with world-class scientists, clinici...
27/06/2026

Top 10 Abstracts Wanted! International Obesity Society (IOS) Endorsed Event:

Meet up with world-class scientists, clinicians and surgeons!

Abstract Submission and Registration OPEN NOW!!! Will be closed on 30th June, 2026
https://www.apaosm.org/2026

4th Scientific Meeting of the Asia Pacific Alliance for Obesity and Sarcopenia Metabolism (APAOSM 2026)

2nd Scientific Meeting of the APAOSM Metabolic and Bariatric Surgery Committee (APAOSM-MBS 2026)

Date:
11th July, 2026

Venue:
The Hong Kong Polytechnic University, Hong Kong, China

Organizer:
Asia Pacific Alliance for Obesity and Sarcopenia Metabolism (APAOSM)

Co-organizer:
Hong Kong Nutrition Association (HKNA)
The Hong Kong Polytechnic University (PolyU)

Supporting Organizations:
Macau Nutrition Association (MNA)
International Obesity Society (IOS)
The Federation of Medical Societies of Hong Kong (FMSHK)

4th Scientific Meeting of the Asia Pacific Alliance for Obesity and Sarcopenia Metabolism (APAOSM 2026)

Dear friends and colleagues, let’s join the International Obesity Society (IOS) - Let Our Expertise Shine! Call for Appl...
25/06/2026

Dear friends and colleagues, let’s join the International Obesity Society (IOS) - Let Our Expertise Shine!

Call for Applications: Welcome to join the Regional Chapters, Country Chapters, Committees, Working Groups and Taskforces of the International Obesity Society (IOS)

https://www.ios.xin/sys-nd/32.html

Dear friends and colleagues, let’s join the International Obesity Society (IOS) - Let Our Expertise Shine! Call for Appl...
25/06/2026

Dear friends and colleagues, let’s join the International Obesity Society (IOS) - Let Our Expertise Shine!

Call for Applications: Welcome to join the Regional Chapters, Country Chapters, Committees, Working Groups and Taskforces of the International Obesity Society (IOS)

The International Obesity Society (IOS) is a dynamic network of professionals dedicated to establish

International Obesity Society Endorsed Event:Meet up with world-class scientists, clinicians and surgeons!Abstract Submi...
14/06/2026

International Obesity Society Endorsed Event:

Meet up with world-class scientists, clinicians and surgeons!

Abstract Submission and Registration OPEN NOW!!!
https://www.apaosm.org/2026

4th Scientific Meeting of the Asia Pacific Alliance for Obesity and Sarcopenia Metabolism (APAOSM 2026)
 
2nd Scientific Meeting of the APAOSM Metabolic and Bariatric Surgery Committee (APAOSM-MBS 2026)
 
Date:
11th July, 2026
 
Venue:
The Hong Kong Polytechnic University, Hong Kong, China
 
Organizer:
Asia Pacific Alliance for Obesity and Sarcopenia Metabolism (APAOSM)
 
Co-organizer:
Hong Kong Nutrition Association (HKNA)
The Hong Kong Polytechnic University (PolyU)
 
Supporting Organizations:
Macau Nutrition Association (MNA)
International Obesity Society (IOS)
The Federation of Medical Societies of Hong Kong (FMSHK)

International Obesity Society Endorsed Event:Meet up with world-class scientists, clinicians and surgeons!Abstract Submi...
14/06/2026

International Obesity Society Endorsed Event:

Meet up with world-class scientists, clinicians and surgeons!

Abstract Submission and Registration OPEN NOW!!!
https://www.apaosm.org/2026

4th Scientific Meeting of the Asia Pacific Alliance for Obesity and Sarcopenia Metabolism (APAOSM 2026)

2nd Scientific Meeting of the APAOSM Metabolic and Bariatric Surgery Committee (APAOSM-MBS 2026)

Date:
11th July, 2026

Venue:
The Hong Kong Polytechnic University, Hong Kong, China

Organizer:
Asia Pacific Alliance for Obesity and Sarcopenia Metabolism (APAOSM)

Co-organizer:
Hong Kong Nutrition Association (HKNA)
The Hong Kong Polytechnic University (PolyU)

Supporting Organizations:
Macau Nutrition Association (MNA)
International Obesity Society (IOS)
The Federation of Medical Societies of Hong Kong (FMSHK)

4th Scientific Meeting of the Asia Pacific Alliance for Obesity and Sarcopenia Metabolism (APAOSM 2026)

Last call… Close Today!!!Multicenter Prospective Study Collaboration Recruitment: External Validation of IDA Risk Predic...
05/06/2026

Last call… Close Today!!!

Multicenter Prospective Study Collaboration Recruitment: External Validation of IDA Risk Prediction Model after MBS

Dear friends and colleagues, I would you like invite you to join our latest study below. Thank you for your participation and support.😊

Multicenter study recruitment: External Validation of a Risk Prediction Model for Iron Deficiency Anemia (IDA) after Metabolic and Bariatric Surgery (MBS)

Details: https://www.ios.xin/sys-nd/9.html

2nd International Obesity Society Congress (IOS 2026 Chengdu)

Dear friends and colleagues are invited to join a multicenter prospective study. It's an IOS - e

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T2 Guangzhou Baiyun International Airport 广州白云国际机场
Guangzhou

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