Sinead O’Connor’s Exact Cause of Death Revealed One Year After Her Death

Sinead O’Connor‘s official cause of death has been revealed one year after her passing.

The “Nothing Compares 2 U” singer’s death certificate lists that she died from chronic obstructive pulmonary disease (COPD) and asthma, the Irish Independent reported on Saturday (July 27).

The death certificate specifically noted that O’Connor’s passing was a result of “exacerbation of chronic obstructive pulmonary disease and bronchial asthma together with low grade lower respiratory tract infection,” the publication said.

The certificate was reportedly registered by the late Grammy winner’s husband, John Reynolds, in London on Wednesday (July 24).

O’Connor died at 56 in her London home on July 26, 2023, where authorities said she was found “unresponsive.” The next day the police announced that they were not treating her passing as suspicious and had handed the investigation over to the coroner’s office to determine the cause of death.

In January, London’s Southwark Coroners Court announced that O’Connor died of natural causes and that the coroner had “therefore ceased their involvement in her death.”

At the time of her death, O’Connor’s family said, “It is with great sadness that we announce the passing of our beloved Sinéad. Her family and friends are devastated and have requested privacy at this very difficult time.”

The Irish singer struggled with mental illness throughout her life, including PTSD, depression and suicidal tendencies. In 2022, her 17-year-old son Shane died by apparent suicide. She is survived by three children, including daugher Roisin Waters, aged 28.

O’Connor released her bracing debut album, The Lion and the Cobra, in 1987, featuring the alt radio hits “Mandinka” and “I Want Your (Hands On Me),” followed by her breakthrough 1990 masterpiece, I Do Not Want What I Haven’t Got. The sophomore effort featured her global breakthrough hit, the No. 1 Prince-written smash “Nothing Compares 2 U,” as well as such enduring favorites as “The Emperor’s New Clothes” and the hypnotic “I Am Stretched on Your Grave.”