But Horowitz, who will speak at the International Life Expo this weekend, is now certain the diseases were intentionally manufactured and deployed to thin and control the human herd. His latest book, Death in the Air: Globalism, Terrorism, & Toxic Warfare, which will be published in May, builds on his previous meticulous research and enters the annals of conspiracy literature -- a move that may leave many of his proponents behind and tarnish his credibility.
"A lot of people want to blame bureaucracy and sloppy science, or people just making mistakes," says Horowitz. "But that really negates what you see consistently in human nature. In [Death From the Air] I take you into the additional support for the intentional theory, the genocidal theory."
Government agencies have been accused in the past of releasing biohazards on unsuspecting civilians. In the mid-'70s, Congress investigated the CIA concerning the introduction of mild bacteria into a New York City subway tunnel, as well as the agency's stockpiling of biological weapons in direct violation of the Geneva Protocol banning such practices. But since investigators didn't have enough evidence to convict any individuals or agencies, Horowitz has taken it upon himself to "expose their puppet warlords."
"They're known in various circles," he explains, claiming that world governments are really controlled by 13 families who are so rich that now only ultimate power will satiate them. "Some call them the Oligarchy, some call them the Illuminati -- they are central to the issue."
The real purpose of his research gets buried under such rhetoric. After writing an expos´ on Florida dentist Dr. David Acer, who intentionally infected his patients with AIDS -- leading Horowitz to uncover the disease's possible origins -- Horowitz has written primarily on "nutrition, natural medicine, and divine healing." His intent is to inspire people to watch their health for themselves, since, he says, the money-hungry medical-industrial complex cannot be altogether trusted.
"It's egocentric to think you and I -- little peons in the system -- are going to make a big difference" in the way the world is run, Horowitz says. But "you can't live your life in fear; you've got to move ahead. Make yourself aware; begin to make choices to improve your own health and longevity."