https://en.wikipedia.org/wiki/Miracle_Mineral_Supplement

MMS is falsely promoted as a cure for HIV, malaria, hepatitis viruses, the H1N1 flu virus, common colds, autism, acne, cancer, and much more. The name was coined by former Scientologist[9] Jim Humble in his 2006 self-published book, The Miracle Mineral Solution of the 21st Century.[10] There have been no clinical trials to test these claims, which come only from anecdotal reports and Humble's book.[11][12] In January 2010, The Sydney Morning Herald reported that one vendor admitted that they do not repeat any of Humble's claims in writing to circumvent regulations against using it as a medicine.[13] Sellers sometimes describe MMS as a water purifier to circumvent medical regulations.[14] The International Federation of Red Cross and Red Crescent Societies rejected "in the strongest terms" reports by promoters of MMS that they had used the product to fight malaria.[15] In 2016, Humble said that MMS "cures nothing".[16] In August 2019, the Food and Drug Administration repeated a 2010 warning against using MMS products, describing it as "the same as drinking bleach".

It's an oldish conspiracy in right-wing circles. He also believes that his heart is a battery with a finite number of thumps so I think that's just how he believes bodies work.