In the past few decades, the fortunate among us have recognized the hazards of living with an overabundance of food (obesity, diabetes) and have started to shift our diets. But most of us do not yet understand that news is to the mind what sugar is to the body. News is easy to digest. The media feeds us small bites of trivial matter, tidbits that don’t really concern our lives and don’t require thinking. That’s why we experience almost no saturation. Unlike reading books and long, deep magazine articles (which requires thinking), we can swallow limitless quantities of news flashes, like bright-colored candies for the mind.