Weight

Weight-related deaths can affect non-obese too

Of the 4 million deaths attributed to being overweight in 2015, nearly 40% were not considered clinically obese.

The study found more than 2 billion children and adults suffered from health problems linked to being overweight.

These include type 2 diabetes, heart disease and some cancers.

But an increasing percentage had a body mass index (BMI) of less than 30, the threshold for obesity.