[Hildy]

My friend's 17 year old son died of a massive heart attack...it's not all that rare.

[Rte66]

We have more on it going over here - various versions and explanations, none really confirmed yet, all of them disputed:

http://www.freerepublic.com/focus/f-news/1700152/posts
Celebrity's son's death mystery (Anna Nicole)
The Nassau Guardian ^ | Sept. 12, 2006 | IANTHIA SMITH & INDERIA SAUNDERS

[Song of the South]

My friend's 17 year old son died of a massive heart attack...it's not all that rare.

Often, when this happens, it is caused by a previously undetected congenital anomaly that has given absolutely no warning at all. How sad for your friend. Very little can compare to the tragic loss of a dearly loved child.

 

SoS