After about age 50, most peo­ple begin to expe­ri­ence a decline in mem­ory capa­bil­ity. Why is that? One obvi­ous answer is that the small arter­ies of the brain begin to clog up, often as a result of a life­time of eat­ing the wrong things and a lack of exer­cise. If that life­time has been stress­ful, many neu­rons may have been killed by stress hor­mones. Given the most recent sci­en­tific lit­er­a­ture, reviewed in my book Thank You, Brain, For All You Remem­ber. What You For­got Was My Fault, dead neu­rons can’t be replaced, except in the hip­pocam­pus, which is for­tu­nate for mem­ory because the hip­pocam­pus is essen­tial for mak­ing cer­tain kinds of mem­o­ries per­ma­nent. Another cause is incip­i­ent Alzheimer’s dis­ease; autop­sies show that many peo­ple have the lesions of the dis­ease but have never shown symp­toms, pre­sum­ably because a life­time of excep­tional men­tal activ­ity has built up a “cog­ni­tive reserve.

So is there any­thing you can do about it besides exer­cise like crazy, eat healthy foods that you don’t like all that much, pop your statin pills, and take up yoga?

Yes. In short: focus, focus, focus.

Chang­ing think­ing styles can help. Research shows that Read the rest of this entry »