First, you shouldn't be taking any saturated fats (coconut oils) whilst your LDL is high. It's too much stress on your heart and blood vessels. It's best to just do the Olive oil. You may have some genetic disorder that your drs. haven't got to the root of yet. You have tried every alternative thing I can think of and nothing really works for you. You should go to this site called wellness resources
He has a really good article about iodine. He says that some forms of Iodine your body can't absorb.
Your weakness could be some vitamin deficiencies, and you should try a dermatologist for your skin. Drink close to a gallon a day, take fish oils, and eat more fish, chicken, walnuts, almond butter etc. This has enough good oils to help your skin some.
I work in a blood lab and a tech. told me that in America people do not have the parasites they are paranoid about. We run many Ova and parasite (O&P) tests daily and she says there is a minut amt of parasites if any. And if you had candida it would be more like a yeast type infection. It sounds to me like you have serious deficiencies in your diet by way of good fats, vitamins and minerals.