An open-access report published in The Lancet predicts that if trends continue, by 2025, global obesity prevalence will reach 18% in men and surpass 21% in women. Severe obesity will surpass 6% in men and 9% in women.
The report from the NCD Risk Factor Collaboration included 19.2 million people in 200 countries, where the researchers estimated trends in mean BMI. Although underweight remains prevalent in the world 's poorest regions, especially in south Asia, more people in the world are now obese than underweight. Australian men rank 5th in the world with 27.6% obese, and Australian women rank 9th, with 27.9%.
A useful interpretation of the results, including graphs and an interview with one of the major researchers can be found in the Sydney Morning Herald (April 2, 2016) article, Obesity a bigger problem than world hunger, Lancet study says by Catherine Armitage and Inga Ting.
NCD Risk Factor Collaboration. (2016). Trends in adult body-mass index in 200 countries from 1975 to 2014: a pooled analysis of 1698 population-based measurement studies with 19· 2 million participants