Canada is one of more than 190 countries to have ratified the United Nations Convention on the Rights of the Child, a 1989 treaty that sets out protections for children. The treaty - which has been ratified by all UN member states except for the United States, Somalia and South Sudan - includes a passage stating that countries must protect children from “all forms of physical or mental violence”. “If we had two or three studies that showed that if you took 500 mg of vitamin C a day you could reduce cancer risk, we would all be taking 500 mg of vitamin C a day,” Durant said. “Here, we have more than 80 studies, I would say more than 100, that show the same thing (about corporal punishment), and yet we keep calling it controversial.
Spanking kids can cause long-term harm: Canada study

Source: health.yahoo.net