Just drink 4 cups a day; decaf works, too
                                
                                
                                    (Newser) -
                                    Consuming four cups a day of coffee, tea, or even decaf dramatically lowers the risk of developing Type 2 diabetes, researchers say. In 18 studies that covered a whopping half-million people, coffee drinkers lowered their risk of diabetes by 7% per cup,  Bloomberg  reports. More research is needed, but the...