A report by The Guardian on Sunday revealed that Donald Trump's private golf resort in Florida will next week host a major gathering of figures promoting discredited and dangerous health remedies, including chlorine dioxide, an industrial bleach falsely marketed as a cure for multiple illnesses.

Among the 50 speakers listed for the two-day "Truth Seekers Conference" at Trump National Doral Miami is Andreas Kalcker, a German national known for pushing chlorine dioxide as a treatment for cancer, Covid-19, and autism. Kalcker describes the product, which he brands as "CDS" (chlorine dioxide solution), as "possibly the greatest medical discovery of the last 100 years," despite widespread condemnation from health authorities.

Ovarian cancer cured with CDShttps://t.co/Znws6FnTcU
Ovarian cancer treated with CDS (chlorine dioxide solution) has shown excelent results in many cases. CDS enhances the electromolecular charges within the body, helping energy-depleted cells to function properly again. This…

— Dr. h.c. Andreas Ludwig Kalcker (@Kalckerofficial) April 27, 2025

The US Food and Drug Administration (FDA) has repeatedly warned that chlorine dioxide is a toxic substance designed for industrial use, not human consumption. The agency has cited serious and life-threatening side effects such as dehydration, kidney damage, and severe diarrhea. In Spain and the US, officials have labeled Kalcker's claims as fraudulent and dangerous, equating the product to drinking bleach.

Kalcker's scheduled appearance at the Doral event underscores a broader rise in alternative health misinformation during Trump's second term, according to the report. Trump's appointment of prominent vaccine skeptic Robert F. Kennedy Jr. to head the Department of Health and Human Services has further raised alarm within scientific and medical communities. Kennedy, who previously led the anti-vaccine organization Children's Health Defense, has suggested treatments for the current measles outbreak in Texas, including cod liver oil, and praised two doctors for allegedly "healing" 300 children with measles through the use of the inhaled steroid budesonide.

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During his confirmation hearings, Kennedy directly referenced chlorine dioxide, praising Trump's pandemic response for considering "all of the different remedies, including … even chlorine dioxide." His comments appeared to shed light on Trump's infamous April 2020 remarks at a White House briefing, when the then-president suggested exploring disinfectant injections to treat Covid-19. At the time, Trump stated, "I see the disinfectant where it knocks it out in a minute, one minute. And is there a way we can do something like that, by injection inside or almost a cleaning?"

The Guardian report also points to what it describes as censorship of scientific information under the new Trump administration. Several government health websites and databases have been taken offline, including an FDA page that once warned about the dangers of chlorine dioxide. Although that specific page now shows a "page not found" error, a 2019 FDA press release warning against chlorine dioxide remains accessible, stating: "The US Food and Drug Administration is warning consumers not to purchase or drink a product sold online as a medical treatment due to a recent rise in reported health issues. Chlorine dioxide products, when mixed, develop into a dangerous bleach which has caused serious and potentially life-threatening side effects."

Bleach profiteering

Legal action against distributors of chlorine dioxide has already taken place. Mark Grenon, a major figure in the US bleach promotion network, was sentenced to five years in prison in 2023, while his sons, Jonathan and Jordan Grenon, received sentences of over 12 years.

Kalcker, meanwhile, continues to market his bleach solution heavily in Latin American countries like Bolivia and Mexico, styling himself as "Dr. Kalcker" and promoting what he calls "electromolecular medicine." His claims include the supposed reversal of autism, improvement in Parkinson's disease symptoms, and healing from "vaccine damage," though none are supported by credible scientific evidence.

"Kalcker presents himself as a doctor, is very clever, and has created a product that sounds and looks plausible. But at the same time he is promoting the lunatic idea that autism is caused by parasites," said Fiona O'Leary, a campaigner against pseudoscience and a mother of autistic children.

In 2021, Kalcker faced legal scrutiny in Argentina after a five-year-old boy died following the administration of chlorine dioxide by his parents, leading to charges against him for promoting a false medical remedy.

Read more: Macron tells US scientists to 'choose France' amid research crackdown

Kalcker plans not only to speak at the Doral event but also to sell books promoting his bleach product. The Guardian contacted Trump's resort for comment regarding the decision to host the event, but no response was immediately received.

The conference organizer, Charlie Ward, has close ties to Eric Trump and has promoted several conspiracy theories, including QAnon. In a 2022 speech captured by Media Matters, Ward falsely claimed, "More people have been killed by the jab than were killed in the Holocaust."