There are now more obese people than skinny people in the world, according to a major study published in the medical journal The Lancet. In South Asia, almost a quarter of the population are still underweight. In central and east Africa, levels of underweight are higher than 12 percent in women and 15 percent in men. Almost a fifth of the world’s obese adults, 118 million of them, live in six high-income English-speaking countries – Australia, Canada, Ireland, New Zealand, UK and the US. In Australia, about 27 percent of the population are obese.