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What Is Obesity?

Obesity is a chronic, relapsing, inflammatory disease that requires lifelong medical care.1-3An adult with a BMI >30 is considered to have obesity.4,5 Obesity affects almost every organ in your body and increases your risk of developing serious health problems, including type 2 diabetes, high blood pressure, stroke, liver and kidney disease, sleep apnoea, and osteoarthritis.6-8

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The Facts About Obesity. Download PDF


Calculate Your Body Mass Index

BMI calculates the relationship between weight and height. It can measure obesity and indicate risk for developing weight-related health problems. 4,6

Calculate your BMI here


Why Diet and Exercise Don’t Always

Obesity is influenced by many factors.1,4,9,10 Changes in environment, stress levels, sleep, or diet can trigger your body to store fat and gain weight.4,5,10,11 Diet and exercise can lead to weight loss, but it can be hard to keep it!.2,11,12 Losing weight through diet and exercise can trigger your body to increase hunger, decrease feelings of fullness, and slow down metabolism – like your body is fighting weight loss.2,11,14

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Why is Weight Loss so Hard to Maintain? Download PDF

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Want To Know More

Ready to take the next step in your weight loss journey? Read our resource on talking to your doctor about weight loss surgery or visit our Weight Loss Support page for more options.

Discussing Weight Loss Surgery With Your Doctor. Download PDF

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Why Is Weight Loss Surgery Effective?

Ready to know more about weight loss surgery? Our Weight Loss Surgery page can answer some of your questions and help you to understand if weight loss surgery could be right for you. You should always talk to your doctor when considering surgery.

Weight Loss Surgery as an Effective Treatment for Obesity. Download PDF

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1. Bray GA, et al. Obes Rev. 2017;18(7):715-723.
2. Papamargaritis D, le Roux CW. Nutrients. 2021;13(3):762.
3. Royal Australian College of General Practitioners. Obesity prevention and management position statement. February 2019. Available: Obesity-prevention-and-management.pdf (accessed May 2021).
4. National Health and Medical Research Council. Clinical practice guidelines for the management of overweight and obesity in adults, adolescents and children in Australia. 2013. Melbourne: National Health and Medical Research Council.
5. Schwartz MW, et al. Endocr Rev. 2017;38(4):267-296.
6. Bray GA, et al. Endocr Rev. 2018;39(2):79-132.
7. Poirier P, et al. Circulation. 2006;113(6):898-918.
8. Garvey WT, et al. Endocr Pract. 2016;22 Suppl 3:1-203.
9. Caterson ID, et al. Diabetes Obes Metab. 2019;21(8):1914-1924.
10. Das B, Khan OA. Int J Surg. 2019;68:114-116.
11. Sumithran P, Proietto J. Clin Sci (Lond). 2013;124(4):231-241.
12. Al-Najim W, et al. Physiol Rev. 2018;98(3):1113-1141.
13. Pucci A, Batterham RL. J Endocrinol Invest. 2019;42(2):117-128.
14. Fothergill E, et al. Obesity (Silver Spring). 2016;24(8):1612-1619.