In 2007, studies showing a little‐known substance called Dichloracetic acid (DCA) could shrink, and even kill cancer cells set the alternative health world and news outlets abuzz. There were claims that DCA could cure even the hardest to treat cancers. On top of that, it was cheap. And since it wasn’t a patented drug yet, people could get it without a prescription. DCA sales skyrocketed. Natural health gurus widely promoted it as the “magic bullet” for cancer. Hopeless patients were snapping up DCA as fast as they could. Companies selling DCA made a killing…literally.