HFCS Is probably like many other things bad for you if you drink to much, If it is Watered down I doubt it would hurt your body overly, If it did both my dad and mom would probably be in bad shape because up till about ten years ago they drank soda like it was water,
Also my dad makes a killer pancake syrup with that stuff, If it hurt your body to much dont u think more people would have shown up with bad signs? maybe more have actually but the point is most things are good in moderation, Even alcohol ( Tho I doubt I will ever drink it) is good for you in moderation, The problem is people just dont stop drinking the stuff.