Obviously a bit of juice never killed anyone, but obviously as an occasional (once a week sorta thing) treat. I was a chubby child/tween and I'm it's because my parents had an endless supply of Raro, which if you don't know is like these little sachets of flavoured powder that make up a litre of juice and I basically drank them WAY too often.
So yeah, my parent's slight lack of discipline on the fluids side of things was probably not their best move.