Experts warn social media ‘parasitic cleanses’ lack evidence and pose health risks

Medical experts and accredited dietitians have issued strong warnings against the growing popularity of social media-promoted “parasitic cleanses,” stating there is no scientific evidence to support their efficacy and highlighting significant risks to health. Professor Aaron Jex of the Walter and Eliza Hall Institute of Medical Research noted that parasitic infections are uncommon among otherwise healthy individuals in major developed cities, yet symptoms such as constipation, fatigue, and brain fog are frequently attributed to them by influencers.

Jex, who leads an infectious disease research laboratory, reported that he and his colleagues are regularly contacted by individuals convinced they suffer from prolonged, undiagnosed parasitic infections. These patients often describe symptoms including bowel discomfort and sensations of “worms” crawling beneath the skin or floating in their eyes. Many report spending significant time and money seeking diagnosis, only to be told there is no evidence of infection, leading to feelings of hopelessness and being dismissed as imagining their symptoms.

While some cleanse ingredients are derived from natural sources, Jex explained that effective antiparasitic drugs require rigorous processing. He cited Nobel Prize-winning medicines such as artemisinin and ivermectin, which are derived from natural sources but must be purified, concentrated, and synthesised to deliver a curative dose. The raw ingredients found in over-the-counter cleanses cannot provide the necessary concentration to treat an infection, and laboratory evidence for other components like garlic or black walnut oil requires further clinical validation.

Accredited dietitian Danielle Shine warned that these supplements can cause adverse effects, including dehydration, electrolyte imbalances, gastrointestinal irritation, and liver injury. She noted that so-called natural detoxifiers such as zeolites, clays, and activated charcoal lack clinical evidence for parasite cleansing and may interfere with the absorption of nutrients and medications. Shine emphasised that parasites cannot be diagnosed by appearance alone, and substances like mucus, undigested food, and normal intestinal material are often misidentified as parasites.

Jex added that normal intestinal material can twist into thread-like shapes, a phenomenon frequently cited in online forums as “rope worms.” However, no such group of parasites has been described in peer-reviewed scientific literature. He stressed that diagnosis requires expert identification, and prescribed anti-parasitic drugs available through medical systems are well-tested, highly effective, and have minimal side-effects compared to unregulated cleanses.