Porn star Marilyn Chambers, who was found dead in her Los Angeles-area home in April, died of complications from heart disease, coroner’s officials said on Monday.

The 56-year-old, who starred in the 1972 film Behind the Green Door, one of the first X-rated films to be released widely in the United States, was found dead in her suburban Canyon Country home on April 12. The autopsy and toxicology tests confirmed she had suffered a cerebral hemorrhage and aneurysm related to heart disease.

Born Marilyn Ann Taylor, Chambers got her start in showbusiness when she was still holding a rattle — making her first appearance as a model as the blond infant featured on the Ivory Snow soap box for decades.