I just read a recent article put out by John Hopkins Children's Center posted on Babycenter, which reports on a startling risk to babies younger than six months old.Read more About How Drinking water can harm babies blog comments powered by Disqus
I had not been aware of this with my own sons, but thankfully knew that breastmilk was best, at least until my oldest only wanted formula.
The article states, "Because babies' kidneys aren't yet mature, giving them too much water causes their bodies to release sodium along with excess water, Anders said. Losing sodium can affect brain activity, so early symptoms of water intoxication can include irritability, drowsiness and other mental changes. Other symptoms include low body temperature (generally 97 degrees or less), puffiness or swelling in the face, and seizures."