Catherine Keane, 31, from Rathmines in Dublin, was found by her housemates after she failed to come down for breakfast. The cause of her death was put down to Sudden Adult Death Syndrome (SADS)... A fit and healthy young woman died in her sleep without warning. Catherine Keane's housemates didn't think much of it when she failed to come down for breakfast ... Catherine had passed away in the night. It was later determined she'd died from Sudden Adult Death Syndrome (SADS). SADS is a condition where someone dies suddenly and unexpectedly from a cardiac arrest, but the cause of...