(AJC) — The Georgia Bureau of Investigation on Tuesday announced that prescription drug overdose deaths declined by 9 percent in 2011, reversing an upward trend that had prevailed since 2008.

There were 512 prescription drug overdose deaths in 2011, compared to 560 in 2010. Total overdose deaths — those caused by prescription drugs, illicit drugs, or a combination of the two — also declined 9 percent from 729 to 664.

Middle-aged white people made up the largest majority of the deceased, and an overwhelming portion (91 percent) of the deaths were accidental. Eight percent were suicides and 1 percent were undetermined.

Note: Read our discussion guidelines before commenting.