The mother of Aidan Zingg, a rising motocross star who died in a mid-race crash June 28, told USA TODAY the cause of death was cardiac tamponade.

The cause of death of a mother of six, who was found dead in a homeless encampment in Los Angeles in May, has been revealed.

Lewy body dementia "causes a decline in mental abilities that gradually gets worse over time. People with LBD might see things that aren't there, known as visual hallucinations. They also may have changes in alertness and attention," the Mayo Clinic wrote.

The cause of death for "Nip/Tuck" and "Fantastic Four" star actor Julian McMahon has been revealed after he died July 2 at age 56.

Michael Madsen, who was found unresponsive in his Malibu home on July 3, died from heart failure, with heart disease and alcoholism as contributing factors, his rep said.

David Gergen, ex-advisor to four U.S. Presidents and CNN analyst, died at 83 from Lewy body dementia, his son confirmed on Friday.

Doing a certain amount of exercise is linked to a 30% to 40% lower risk of an early death from any cause, according to a new analysis of 85 studies.