You can reduce your risk of developing cancer by eating a wide variety of nutritious foods as described in the Australian Guide to Healthy Eating. Even though diet can influence your risk of developing cancer, there is little evidence that special foods can be used to cure existing cancers.
Despite its high price, the Scientology E Meter is a primitive device that measures the electric resistance between the hands. It was first introduce by Volley Mathieson, an LA Chiropractor. In essence, with all its frills, it should not cost more than $150.
An EMF meter can measure AC electromagnetic fields, which are usually emitted from man-made sources such as electrical wiring, while gaussmeters or magnetometers measure DC fields, which occur naturally in Earth's geomagnetic field and are emitted from other sources where direct current is present.