It's not public information, so anything out there is speculation.

Steve Gorman suggested that it might have been some old habits catching up with him on his radio show, but didn't go into any detail.

It really doesn't matter how he went, let's just celebrate the music.

Gorman, who loved the man, said that Harsch was like a walking pharmacy. that they had open discussions about it. but that it was something that Harsch could not and did not want to stop.

Harsch said that he was doing scientific research.

so while it is not public knowledge about how he did, it is well implied.