What is BMI and How Is Obesity Defined?

Body Mass Index (BMI) is a measure of body weight relative to height and is calculated by dividing the weight (in kilograms) by the height (in metres) squared. It is used to identify the level of obesity among an individual. Generally, a BMI of 25-29.9 is considered overweight, while a BMI of 30 or greater is considered obese.

What Health Risks Are Associated With Obesity?

Obesity can increase the risk of many health issues such as coronary heart disease, Type 2 diabetes, sleep apnoea, cancer, joint problems, stroke and high blood pressure1. Obesity can also have a significant effect on your mental health, causing anxiety and depression2.

How Can We Work to Avoid Becoming Obese?

Avoiding obesity starts with eating a healthy, balanced diet that is low in saturated fat, sugar and salt, and rich in dietary fibre from whole grains, fruits and vegetables. Regular physical activity also helps control body weight, as well as boosting your overall health and wellbeing3. If you are overweight or obese, your doctor may refer you to a dietitian, who can help formulate a nutritious and balanced diet plan specifically for you.

In addition, it’s important to monitor your BMI regularly to ensure that your weight is staying within the recommended range. If you are overweight or obese, it’s important to make lifestyle changes to reduce your risk of developing lifestyle-related health issues.

1 https://www.nhlbi.nih.gov/health-topics/obesity
2 https://www.beyondblue.org.au/personal-best/pillar/healthy-weight/benefits-of-losing-weight
3 https://www.nhs.uk/live-well/exercise/how-much-should-i-be-doing/