article_snippet.sent: Body Mass Index, calculated from a person's weight and height, is accepted as a reliable indicator of obesity.
article_snippet.sent: According to the World Health Organisation, the ideal BMI for most adults is between 18.5 and 24.9.
article_snippet.sent: If a person's BMI is 25 to 29.9, they are classed as overweight.
article_snippet.sent: At between 30 and 39.9 they are obese and 40 or over is very – or morbidly – obese.