Natalie Cole's Cause of Death Revealed

The singer died on New Year's Eve.

The singer died on New Year's Eve at a hospital in Los Angeles at 65.

“This is a very serious and progressive disorder," her family said in the statement. "[Cole] responded well to PAH-specific agents over many years, during which she performed many concerts world-wide, but eventually succumbed to intractable right heart failure, an outcome that unfortunately commonly occurs in this progressive disorder, despite modern therapies.”