…died of pneumonia, not an overdose, rules the Los Angeles County Coroner:
Although the investigation into Haim’s death began as a “suspected prescription medication overdose,” toxicology tests “revealed no significant contributing factors” from drugs, the coroner reported.
The autopsy found “an extremely large amount” of swelling in Haim’s lungs, it said. […]
Haim died March 10 after collapsing at the Los Angeles apartment he shared with his mother.

But his body was weak from like 25 years of drug abuse, right?
Meh. But he sure was cute in the 80s. Next?
Brittnay Murphay…Corey Haim…who’s next? Who else is gonna die from pneumonia? Ask yourself this, “are there Scientology hit-men?”
I’ve had pneumonia. It isn’t fun. Drugs has little to do with it. It’s just bacterial (usually). It starts out like just a really bad cold, and can fool you into thinking nothing is seriously wrong until it’s too late.
@4: Very true. I got it a couple times growing up, the worst was when I was in my freshman year of high school. When my parents finally came to their senses and drug me to the hospital (all the while hearing me say, “I don’t know wha…*cough, cough*.. what all the fuss is ab-*cough, cough, cough wheeze* I’m fine!”), my entire left lung was full, and my right wasn’t far off.