What You Need to Know: Kristoff St. John

Cause of death for 'The Young and the Restless' actor Kristoff St. John revealed

TMZ reported that the coroner’s office listed hypertrophic heart disease as the cause of death. It is categorized as accidental.

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St. John was found dead in his San Fernando Valley, California, home Feb. 3. He was 52 years old.

According to the American Heart Association, heart disease happens when plaque builds up in the arteries of the heart, making it difficult for it to pump blood to the rest of the body.

LAS VEGAS, NV - JULY 14: Actor Kristoff St. John attends the 10th anniversary celebration of "The Beatles LOVE by Cirque du Soleil" at The Mirage Hotel & Casino on July 14, 2016 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images for Cirque du Soleil)
Photo: Ethan Miller/Getty Images for Cirque du Solei

St. John was best known for his role as Neil Winters on the long-running daytime soap opera “The Young & the Restless.” He had been on the show since 1991 and won numerous Daytime Emmys and NAACP Image Awards for the part.

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