(Insider) Cleanses are nothing new, but one woman’s recent attempt at one is reminding people that they aren’t actually healthy and can have serious consequences. On December 3, YouTuber Chubbyemu, a University of Illinois adjunct medical professsor, shared a video recounting the story of a woman who went brain dead after attempting a cleanse that required her to drink a liter of soy sauce in less than two hours, Health reported.

According to Chubbyemu’s video, the patient thought the soy-sauce cleanse could help release toxins from her body. Instead, it put her into cardiac arrest and eventually caused irreparable nerve damage.

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