You're kidding? Dr (Ph.D not MD) Clark is an out and out fraud.
http://www.quackwatch.org/01QuackeryRelatedTopics/Cancer/clark.html
One of her wacky claims:
All cancers are alike. They are all caused by a parasite. A single parasite! It is the human intestinal fluke. And if you kill this parasite, the cancer stops immediately. The tissue becomes normal again. In order to get cancer, you must have this parasite. . . .
This parasite typically lives in the intestine where it might do little harm, causing only colitis, Crohn's disease or irritable bowel syndrome, or perhaps nothing at all. But if it invades a different organ, like the uterus, kidneys or liver, it does a great deal of harm. If it establishes itself in the liver, it causes cancer! It only establishes itself in the liver of some people. These people have propyl alcohol in their body. All cancer patients (100%) have both propyl alcohol and the intestinal fluke in their livers. The solvent propyl alcohol is responsible for letting the fluke establish itself in the liver. In order to get cancer, you must have both the parasite and propyl alcohol in your body [5:1-2].
I hope you don't own a syncrometer or one of her zappers.
In case you care, the quote you gave was taken out of context. Dr. Clark doesn’t say that all cancer is caused by one parasite. She says that they all are caused by a combination of parasites and toxins. She tells exactly which parasite and which toxins interact and somehow are always present in certain types of cancers. Her research jives with other alternative health practitioners and schools of thought.
You bet I have a zapper! I had a friend build me one using her specs, and I use it whenever I need it. Following her advice I almost never get colds anymore; I used to get them all the time, and they would last forever. By following her advice to stop drinking tea (except herbal), my legs are much better after years of pain and discomfort. After suffering with acid reflux for over a year, I used natural remedies to cure myself in three weeks. Other people I know are content to just take drugs the rest of their lives. Not me.
Of course mainstream medical bureaucracy considers Dr. Clark—and any other person who isn’t a member of their club—a quack. They and the pharmaceutical companies need your money. Go ahead and pay them if it makes you feel more secure, but who do you think funds sites like “Quackwatch.com”? They have to keep the sheeple in line and keep the goose laying the golden egg. I do a lot of research and follow not only Dr. Clark but other non-mainstream, alternative health advice.
It takes guts to take your health into your own hands. But, the alternative is just unthinkable.
Best wishes