There are now more adults in the world classified as obese than underweight, according to a major study led by scientists from Imperial College London.
They compared body mass index (BMI) among almost 20 million adult men and women from 1975 to 2014 and found that obesity in men has tripled and more than doubled in women.
The study, which pooled data from adults in 186 countries, found that the number of obese people worldwide had risen from 105 million in 1975 to 641 million in 2014. Meanwhile the number of underweight people had risen from 330 million to 462 million over the same period.
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