The castor seed contains ricin , a toxic enzyme. Heating during the oil extraction process denatures and deactivates the enzyme. However, harvesting castor beans may not be without risk.  Allergenic compounds found on the plant surface can cause permanent nerve damage, making the harvest of castor beans a human health risk. India, Brazil, and China are the major crop producers, and the workers suffer harmful side effects from working with these plants.  These health issues, in addition to concerns about the toxic byproduct (ricin) from castor oil production, have encouraged the quest for alternative sources for hydroxy fatty acids.   Alternatively, some researchers are trying to genetically modify the castor plant to prevent the synthesis of ricin. 
My ebook should certainly help you to get rid of your systemic candida problem. But I think that there might perhaps be more bad things going on in your living environment as well. I say this because you have serious fungal skin problems as well. And if it's also the case that you also have lung or bronchial problems then this might also indicate that your apartment/home is infested with mold, which is a form of fungus. So I would perhaps get your living space checked for mold and get rid of it as quickly as possible. Mold like Aspergillus niger release millions of microscopic fungal spores into the into the air in your living environment which can easily infect both the skin and the lungs. So if you don't get rid of the mold from your home first then you will always be fighting a losing battle with the fungus in your body.
Why a report on castor oil? Castor oil is one of the most versatile plant oils. Its unique chemical structure makes it useful in a wide number of industries and applications. Castor oil is fast becoming one of the most sought after plant oils, owing to its rich properties and variety of end-uses. Currently, it is being used by industries from pharmaceuticals to lubricants. With biopolymer and bio-fuels industries picking up a lot of steam in the last couple of years, the potential for castor oil to play a much larger role in the world economy had increased dramatically. While the castor oil industry is over five decades old, there has been considerable interest shown in this industry in the last few years. Leading countries from practically every continent (North & South America, Europe, Asia, Africa and Oceania) are showing renewed interest in the castor crop.