In her book "The Cure For All Cancers", Clark postulated all cancers and many other diseases are caused by the flatworm "Fasciolopsis buski". "The adult , though, stays tightly stuck to our intestine or liver, causing cancer, or uterus, causing endometriosis, or thymus, causing AIDS, or kidney, causing Hodgkin's disease)." "I have found that cancer, HIV, diabetes, endometriosis, Hodgkin's disease, Alzheimer's disease, lupus, MS and "universal allergy syndrome" are examples of fluke disease." However, this worm does not live in the United States or Europe, but mainly in India, parts of China, Vietnam and other east-Asian countries, and only in rural areas where people are eating unboiled food from water plants, or where pigs live close to humans. According to Clark, depression is caused by hookworms. Epilepsy and seizures are caused by swelling in the brain, attracting calcium and heavy metals, The swelling being caused by parasites of the genus "Ascaris" as well as by malvin, a natural dye found in strawberries, chicken, and eggs.