Grammy Award-winning singer Christina Aguilera was named an ambassador against hunger on Friday by the United Nations World Food Programme (WFP), and said that having a child of her own had pushed her into action.

"A child dies every six seconds of hunger, which is a huge statistic for me," Aguilera told Oprah Winfrey, announcing her appointment on Winfrey's popular TV talk show.

"After having my own child, I just had to be a part of it and do something about it and help change that situation," she said.