evidence: In the Facebook video, Clark explained how to use the "zapper", an electric device she developed herself that supposedly cures all diseases by clearing parasites from the body. Iterations of Clark’s claims are also common on TikTok, where they accumulate hundreds of thousands of views. But as we will show below, Clark’s claims are baseless, and experts and medical societies have repeatedly dismissed her ideas as pseudoscience. Yet, her claims persist and the "zapper" continues to be marketed online as a cancer treatment. Moreover, Clark’s therapies couldn’t prevent her from dying of multiple myeloma (a type of blood cancer) in 2009, as her official website documented at the time. [...] Then came the "zapper", a device consisting of two copper handles connected to a battery that pulses mild electric currents (nine volts) through the body at a specific frequency (bioresonance). This device is based on the idea that each living organism, including parasites, produces a unique frequency. The "zapper" is supposed to specifically counter the frequency of parasites, killing them without harming human tissues.