Lizabear, I did a www.google.com
search using the terms...
Tide detergent carcinogens fiberglass
Google gave me just 4 hits on those search words and only one of them (the one I linked) talks about Tide. The site mentions Tide and fiberglass, but not Tide and carcinogens.
I did another Google search using the terms...
National Institute of Occupational Safety and Health Tide detergent
Many more links came up, but I didn't see a link to the original study done by the National Institute of Occupational Safety and Health. I do not know anything about this organization. I need to get off the computer and am not really in the mood to search out the NIOSH to see who they are.
I did browse a couple of the links and the study by the NIOSH is cited as a source for determining that Tide contains fiberglass. I still didn't see Tide and carcinogen together.
Hope this helps...
Edited to say I just sent Tide a lengthy message asking about the detergent and fiberglass. If I receive a response, I'll share it. It will be interesting to read what they say.