Before you believe an e-mail warning that may needlessly scare you, check it out. Unfortunately, many recipients are doing just that. Dioxin is potentially carcinogenic and is toxic to the immune and reproductive systems.
Rayon contributes to the danger of tampons and dioxin because it is a highly absorbent substance.
Asbestos is not and has never been used in the making of tampons. Moreover, tampon manufacturing sites are subject to inspection by FDA to assure that good manufacturing practices are being followed. Therefore, these inspections would likely identify any procedures that would expose tampons products to asbestos. True , however, dioxins present must fall below levels mandated by the Food and Drug Administration. While there is no dispute that dioxins are nasty and potentially carcinogenic compounds, the FDA says it is confident that the trace levels of dioxin found in some tampons in the past were harmless, and that any risk of adverse health effects is considered negligible.