Johnson is the great-great granddaughter of the founder of the consumer products giant, Robert Wood Johnson 1, and the daughter of New York Jets owner, Robert ‘Woody’ Johnson 1V.
Although a spokesperson for the Los Angeles police department said in a statement that the death appeared to be from natural causes, Johnson is reported to have suffered a history of drug abuse.
Johnson & Johnson reported sales of $15.1bn in the third quarter of 2009.