Obesity is caused by having excess body weight, usually stored as fat, for your height and is defined as having a BMI over 30. BMI (Body Mass Index) is a ratio your body weight to your height; it is not always perfect but it usually gives a good indication of your weight compared to your ideal weight. You can calculate your own BMI using the NHS Choices BMI calculator.
It is widely known that excess weight leads to many long-term health conditions such as type-2 diabetes, heart disease, high blood pressure and joint problems. As well as long term conditions people who suffer with obesity may suffer with fatigue, lethargy and breathlessness, all of which can be helped by weight loss.
It is thought that more than a quarter of adults in England are obese (they have a BMI of 30 or over). It is widely recognised amongst healthcare professionals that obesity is an increasing problem that is growing at an astonishing rate. Losing excess weight with diet, exercise and weight loss treatment is important to avoid the many chronic health conditions that result from obesity.