Apparently the plant poisoning in the movie (and postulated in the book) weren't correct. If you read the Wikipedia on McCandless[1] research into how he died

Apparently the plant poisoning in the movie (and postulated in the book) weren't correct. If you read the Wikipedia on McCandless[1] research into how he died has made it clear that it was just plain old rabbit starvation[2]. [1] http://en.wikipedia.org/wiki/Christopher_McCandless http://en.wikipedia.org/wiki/Christopher_McCandless [2] http://en.wikipedia.org/wiki/Rabbit_starvation http://en.wikipedia.org/wiki/Rabbit_starvation