Jan,
There are a lot of snake oil salesperson types out there selling so called holistic natural treatments and products. I think it is okay to talk to these people but definitely listen with a grain of salt. Be especially wary of those who are selling acupuncture and massage treatments.
I took the deposition of a guy a few months ago and he told me he owned a health store specializing in blood and colon cleansers. Once he said that I subjected him to some very detailed questions about his inventory of products and what they were designed to do and how he marketed them. The answers I got back suggested to me that the guy was an inner city merchant selling placebos as cures to uneducated immigrant types. There are a lot of vultures out there that use unfair trade practices to prey upon poor immigrant communities, and they go from state to state until the law catches up with them and either puts them in jail or strips them of their ability to stay in business.