This an industry... People are in it to make money...
For instance... Candidiasis can be diagnosed quite easily with a simple saliva test or stool culture. It's not difficult to cure, either. If you think you have candida problems, go see your doctor. It's not like some miracle infection that everybody has and nobody can diagnose as these holistic websites would lead you to believe, and it doesn't take some cleansing product to get rid of it, either.
Furthermore, there are herbs out there that are being sold that can hurt you and screw up your body worse than whatever little irritation you're trying to cure.
So don't get the idea that herbal medicine is some happy go lucky playground of health, cures, and good intentions, just because you can buy it over the counter... This stuff is medicine, and should only be taken under the advice of a qualified professional.
Western medicine has every desire to cure as many people as they can afford to. If there's much to be said about all these studies and risks and findings, believe me, the medical community knows about it and takes it into consideration.
However a good naturopath is also a trained professional who specialize in a more broad approach of lifestyle, diet, etc, and works in coooperation with Western medicine.
There is a national organization of qualified and respectable naturopaths. I would personally advise you to speak to one before you start getting all worked up about something you read on the internet.
Herbal medicine has largely been ignored by the FDA. So just remember that even though they're selling it, doesn't mean it's guaranteed to be safe.
It's basically a realm that mixes the paranoid, the dillusional, the psychotic, the fanatic, and the obsessive hypocondriacs, and those fearing impending doom who would buy anything that might have the slightest chance of curing them, with corrupted and misinterpreted science, and a lack of regulations and social responsibility, in a field that is, on the professional level, otherwise well intended, and entirely respectable... It's a dangerous mix because it can lure people into believing some of the wildest bullshit if they don't know any better.