Jack, I see a feature writer who made unsupported statements in an article over ten years ago, and I see a summary of a large number of scientific studies. I choose to believe the second; please feel free to make your own choice.

Fisk is rather a lot more than a "feature writer" and last I heard the truth doesn't go mouldy in ten years. Try this.

http://www.gulfwarvets.com/du.htm

Or just google a bit. There is as much information as disinformation out there if you use your critical faculties.