少吃垃圾食品用英语可以说成 "Eat less junk food." 来源可能源自于对垃圾食品对人体健康的负面影响的认识。以下是一些例句和中文翻译：

Eating less junk food can help improve your overall health. 少吃垃圾食品有助于改善你的整体健康状况。

I'm trying to cut back on junk food to lose weight. 我在尝试少吃垃圾食品来减肥。

It's important to limit your intake of junk food to maintain a healthy diet. 重要的是限制食用垃圾食品以保持健康饮食。