Give up smoking—for good In a recent trial, French scientists proved that middle-aged smokers almost doubled their risk of “memory deficit and decline in reasoning abilities”. This study—which began examining individuals as young as 35 and followed them for more than two decades—also showed that the biggest cognitive gains of stubbing out the habit revealed themselves 10 years after stopping. It’s another compelling reason to stop puffing now!
Prevention's guide for an easy and effective mental tune-up
Yahoo Lifestyle 
