Guinea Pigs Should Not Use Tampons

It’s that time of the month again -- when an e-mail pops up in your inbox with the subject heading "danger!" and the warning that your tampons could be killing you. The e-mail promises all sorts of scary things: manufacturers are adding asbestos to your tampons to make you bleed more so you'll buy more tampons; the bleaching of your tampon creates a chemical called dioxin, which has been linked to cancer; the synthetic fibers in your tampons are the perfect breeding ground for the staph bacteria that causes toxic shock syndrome. But just how much of this is true? And if it's true, what should you do about it?

Well, don't ask me. I have no idea just how dangerous your bleached-out synthetic tampons really are. All I know is that I spent hours investigating the "truth" behind these e-mails and I came away more confused than when I started. This tampon story, as viewed through the lurid lens of public debate, is infused with high drama and a set cast of characters, from corporate villains to incompetent government officials to Internet conspiracists. And each one of them insists the others are spreading false information. At the end of my search, I decided I needed a scorecard to keep track of which disposable tampon was going to win my disposable income:

The "Evil Corporate Empire"

First of all, everyone -- even the most rabid Internet activist -- agrees that the asbestos rumor is simply an urban legend.

But what about dioxin? Dioxin is more famously known as the toxin in Agent Orange, the one that caused cancer and other nasty diseases in Vietnam veterans. It's been found in tampons because it's a chemical byproduct of the paper bleaching process.

Dioxin is a scary chemical that you definitely don't want in your vagina. For that matter, you don't want it in your air or water either, but it's there anyway. Paper mills bleach everything from napkins to disposable diapers, and as they do, they spew out dioxins.

But the corporate giants that make your tampons want you to know that their bleaching process is safe. I called the manufacturer of Tampax tampons, Procter and Gamble -- which also makes virtually every other paper product on your supermarket shelf.

"The bleaching process that we use does not create dioxins," says P&G company spokeswoman Elaine Plummer. And to prove it, Elaine got P&G's senior scientist, Jay Gooch, on the phone. Jay explained that Procter & Gamble uses a special bleaching process called "elemental chlorine free."

He then very kindly offered to send me a scientific study that explained how safe this particular bleaching process was. After reading the study, it did seem safe to me. But I'm not a scientist, so I called up Dr. Philip Tierno, a microbiologist from New York University's Medical Center. Dr. Phil has been doing independent research on tampons for twenty years.

"Dioxin is the most potent toxin known to man," Dr. Phil told me somberly. "One millionth of a gram can kill a guinea pig." Dr. Phil has used that guinea pig statistic in several news articles before, and each time I read it, I'm convinced that guinea pigs should not use tampons.

But even if they did, Dr. Phil agrees that they would probably be OK. Since the manufacturers responded to public concern and changed their bleaching process a few years ago, he says, "The issue has become moot."

Does that let the Evil Corporate Empire off the hook? Not exactly. Instead of dioxins, Dr. Phil's worried about the synthetic fibers in our tampons. Most tampons are composed of viscose rayon, which is more absorbent than cotton. Dr. Phil pointed out that viscose rayon can be a breeding ground for the staph germ that causes toxic shock syndrome (TSS).

As a matter of fact, I asked Jay and Elaine about this, since it's an allegation that's also being spread on the Internet. In answer, I got another packet of studies explaining that rayon was similar to cotton and that neither fiber encouraged the staph germs to grow.