The definition of obesity has changed. Even those who look slim, without a big belly, may be obese. And this leads to many other health problems. The definition now includes a waist circumference of “about 80 cms for females and 90 centimetres for males, and this correlates with the amount of fat in your vital organs,” said Dr Aabha Nagral, who is, Director of Gastroenterology at Jaslok Hospital in Mumbai and also runs their Fatty Liver programme, in a podcast discussion with Sidharth Bhatia. She mentioned not just changing lifestyles, which have become sedentary, and diets, which are full of processed fats, but also genetic and other factors for this. “If you have obese parents, you'll have obese children very often. So that's the genes, but they eat the same food, they have similar physical habits as well.”