Babies don’t have teeth, remember? 😛 But, truly, babies, like children older than they, are susceptible to sugar-highs leading to extreme hyperactivity; therefore, they should be given water.
Truthfully, water rehydrates the body and quenches thirst with no strings attached or fine print. Juices, while occasionally containing some vitamins and minerals (orange juice is good for when you have a cold), have other side-effects, and while it tastes pretty good, I can’t say I feel any less thirsty afterwards. In fact, it makes me thirstier.
Parents, do you want your babies to KEEP CRYING because they’re STILL THIRSTY after you’ve fed them fruit juice?
Believe me, I speak with experience. I was both a baby and a child older than a baby once (but not necessarily at the same time).