Adult Prevalence, Causes and Impact

At a population level, overweight and obesity are usually defined using Body Mass Index (BMI). BMI is a measure of whether a person has a healthy weight for their height. For adults overweight is defined as having a BMI of 25 – 29.9 kg/m2, and obesity is defined as having a BMI of over 30kg/m

Obesity, understood as the accumulation of excess body fat, occurs when energy intake from food and drink is greater than the body’s energy requirements over a prolonged period. An obesogenic environment is one that promotes weight gain and acts on individual physiology and psychology, influencing individual lifestyles.

In Scotland, two out of every three adults now has overweight or obesity. Our briefing and factsheet provide detailed information on prevalence, the wider causes of obesity and how it contributes to a number of health risks.