"...Unlike healthy cells, growing cancer cells are missing the internal feedback loops that are designed to conserve resources when food isn’t available. They’re “addicted to nutrients,” Dang says; when they can’t consume enough, they begin to die. The addiction to nutrients explains why changes to metabolic pathways are so common and tend to arise first as a cell progresses toward cancer: It’s not that other types of alterations can’t arise first, but rather that, when they do, the incipient tumors lack the access to the nutrients they need to grow...(Warburg) believed that most cancer was preventable and thought that chemicals added to food and used in agriculture could cause tumors by interfering with respiration...'it really is insulin itself that’s getting the tumor started.' (said Lewis Cantley, the director of the Meyer Cancer Center at Weill Cornell Medical College)."
To read the full article, go to New York Times Magazine.