I have a Taiwanese friend who says that she always halves the amount of sugar in any western recipe she makes so that it's palatable, since she hasn't grown up eating the over-sweetened garbage food that a lot of Western kids grew up with.
Though we do eat 'too much sugar' - the 'garbage' I suggest is really over-processed, too much hydrogenated oil etc. etc..
Anyone that made their diet out of things 'they cooked themselves' could very well use the recipes as they are and do pretty well. Most dinner dishes do not even call for sugar. Mostly only cakes and what-not. Maybe muffins are a culprit? :)