In cultures which western lifestyle of eating and exercising have been adopted obesity rates have gone up.
This is due to the fact that the western lifestyle of eating is mostly in a rush, consuming fast and consuming food very rich and calories and unhealthy fats, as well as GMO products. This makes the digestive system work very badly and in time the whole body suffers. The intake of the calories is much greater than the energy spent, thus obesity is becoming a common feature in this cultures unfortunately.