Catherine, Princess of Wales, has been diagnosed with cancer and has started preventative chemotherapy, she announced in a video message on Friday. “It has been an incredibly tough couple of months for our entire family,” Catherine said in the video. She said that it has taken time to recover from surgery to start treatment for her cancer. Children, especially younger children, consider their parents a steady rock, she said. If something disrupts that stability — “even if it’s a manageable cancer — to a child’s ears, wow, that is scary.”

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Persons: Catherine, Princess of Wales, ” Catherine, George, Charlotte, Louis, Kathy Hirsh, Pasek Organizations: Temple University, Brookings Institution . Children