Overweight

Being overweight is having more body fat than is considered healthy. The World Health Organization classifies people as overweight when their body mass index, weight divided by the square of height, is between 25 and 30 kg/m2, while a BMI above 30 kg/m2 is defined as obese. It is especially common where food supplies are plentiful and lifestyles are sedentary. By 2003 more than 1 billion adults were considered overweight or obese, rising to more than 2 billion in 2013, with increases seen across all age groups. The source notes that the body needs some fat for hormonal, reproductive and immune function, insulation, shock absorption and stored energy, that treatment at a basic level is diet and exercise, and that the body positivity movement has challenged body shaming.