Tanya - posted on 05/21/2010 ( 74 moms have responded )
Leaving young babies to cry themselves to sleep can harm their developing brains, a parenting expert claims.
Dr Penelope Leach says recent scientific tests show high levels of the stress hormone cortisol develop in babies when no one answers their cries.
If this happens over long periods and repeatedly, it can be "toxic" to their brains, she says in a new book
What do you think?