Welcome :)
My research and my personal opinion on mostly Western culture or I will lean more towards my country the relationships between children and parents are unhealthy in many ways.
It's great to help and nurture your children, thus don't rap them in a bubble, so they don't know how to live their own life and stop to meddle in their personal life as well. No wonder many of them literally refuse to leave their parents nest etc. I could go on and on :))
Your second question on Child protection etc. we have authoritative agency that deals with child neglect, however, this is not my area of expertise to be exact. I am not really able to give you any exact numbers or facts on this.