CNN.com - Memory, Mental Function Begin Slipping as Early as 45
January 6, 2012
http://www.cnn.com/2012/01/06/health/memory-cognitive-function-slips-early/index.html?eref=rss_latest&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2Fcnn_latest+%28RSS%3A+Most+Recent%29