LOUISVILLE, Ky. (WHAS11) -- It's the sound that may be the most
unbearable to a parent, a baby crying. A new study says it is
safe to let them cry it out. The study looks at levels of
cortical stress hormones in a child brain. It found that babies
allowed to cry for short periods of time are no more stressed
than babies whose parents choose to calm them. In other words, a
little crying doesn't do any harm. But the question is, can
parents handle it? The study also says that hearing too much of
this sound can lead to depression. However, the good news is
that it's usually just a phase for both baby and parent. Click
on the video player above for the full story from ABC News.