Brittney Murphy died but why?

Another question from Yahoo Answers “Brittney Murphy died but why?

The actress recently has died of going into cardiac arrest and she was only 32. I am someone who is all about staying healthy and wanting to live a long life. I eat healthy and I workout.
What can I do to prevent this from happening to my heart as of now and in the future?
What exactly does a person need to do in order to not have this horrible condition stuck in their life time? What are they symptoms/warning sighs?

LOS ANGELES – Brittany Murphy’s family said the actress was ill with flu like symptoms in the days before her death and prescription medications were taken from her home, the Los Angeles coroner’s office.
The 32-year-old star of films such as “Clueless” and “8 Mile” died Sunday morning after collapsing at her Hollywood Hills home. Paramedics tried to revive her, but she was pronounced dead at Cedars-Sinai Medical Center.

I come back to some of my earlier posts.
If you have any concerns see your doctor immediately.
Cardiac Arrest in younger people is rare when compared to the World Statistics on Death from Coronary Artery Disease. Or is it?
We only really hear about it when it’s someone high profile such as Murphy and the likes of Antonio Puerta a rising star in La Liga who died whilst playing for Sevilla. in 2007. That same year 2 other young footballers suffered the same fate one of them Anton Reid was just 16 years old.

For now enjoy the genuis that was Antonio Puerta