TTF Tumor Treating Field therapy has been shown to have a great effect on the abiity of cancer cells to reproduce. Learn more here http://www.novocure.com/our-therapy.aspx
This is not to be confused with the hundreds of websites and products that are pure quackery about magical cancer cures from electric devices. The people behind those sites and “cures” that prey upon the desperation of cancer patients and their families have a paid reservation in hell.
This is legit. I know someone at MD Anderson who did some research on this, except he was looking at DC current.