article_snippet: Even before Sharron O'Neill was diagnosed with cancer as a teenager, Sharron O'Neill knew her family had a stronger link to the deadly disease than others.
article_snippet: Sharron O'Neill was diagnosed with bowel cancer when Sharron O'Neill was just 19.
article_snippet: A week earlier, Sharron O'Neill grandmother had died of bowel cancer.
article_snippet: her grandmother was diagnosed with bowel cancer at the age of 39.
article_snippet: Sharron O'Neill family history with cancer extends back much further, with Sharron O'Neill saying Sharron O'Neill tracked Her family history with cancer back more than 200 years. '
article_snippet: Sharron O'Neill's great-grandmother died of cancer.
highlights_snippet: Sharron O'Neill can track cancer in Sharron O'Neill family back to the early 1800s .
  