The coroner announced Thursday that the death of the Johnson & Johnson heiress was caused by diabetic ketoacidosis a life-threatening condition caused by lack of insulin and sky-high blood sugar.
The coroner conducted Johnson's autopsy Jan. 5. Her body was found a day earlier in her Los Angeles home.
The 30-year-old daughter of New York Jets owner Robert "Woody" Johnson lived a party life. In December, she announced her engagement to bisexual reality TV star Tila Tequila.
