When I was visiting my parents once, after getting out of shower all wet and with a towel on, I got an epic line from my father: "Go back to the bathroom, put on some clothes, and lose 10 kilos, before you enter the living room".
In many parts of Europe (I can speak for the Balkans for sure), it's perfectly normal to comment on weight and friends and family. It's not said out of malice, it's with best intentions. And if anything, when everybody you know starts commenting on how fat you are getting, you start and think if it's time to go on a diet. It also usually means that you can get some support from family and friends if you need to change your lifestyle to lose weight, so it can work out good.
It's different with children though - they can be rough and tease/bully you for being fat. For some kids that can be an incentive to take up a sport, for some it will be nothing but trauma.