(Editor’s note: below you have part 5 of the 6-part The Neu­ro­bi­ol­ogy of Stress series. If you are join­ing the series now, you can read the pre­vi­ous part Here.)

Stayin’ Alive

The Human Brain Likes to Be in Balance

For­tu­nately, the brain has some built — in safety sys­tems. Too much cor­ti­sol in the blood sig­nals the brain and adrenal glands to decrease cor­ti­sol pro­duc­tion. And under nor­mal con­di­tions, when the stress is over­come or brought under con­trol (by fight­ing, flee­ing, or turn­ing into an immo­bile statue, or by mas­ter­ing the threat), the hypo­thal­a­mus starts send­ing out the orders to stand down. Stop pro­duc­ing cor­ti­sol!  Event over!  Under con­tin­u­ous stress, how­ever, this feed­back sys­tem breaks down. The hypo­thal­a­mus keeps read­ing the stress as a threat, furtively send­ing mes­sages to the pitu­itary gland, which screams out to the adrenal glands to keep pump­ing out cor­ti­sol, which at this point begins to be neu­ro­toxic — poi­son to the brain. Read the rest of this entry »

My apolo­gies for not writ­ing in a few days…the Global Agenda Sum­mit in Dubai has required all my atten­tion — I will sum­ma­rize the great expe­ri­ence when I land back in San Fran­cisco tomor­row night.

The con­cepts of night and day do become chal­leng­ing when work­ing for a few days in a place with a 12-hour time dif­fer­ence with one’s home base. Sleep is indeed very impor­tant to main­tain top cog­ni­tive shape…which leads me to a fas­ci­nat­ing news announcement:

Health insur­ance firms offer­ing online cog­ni­tive ther­apy for insom­nia (Los Ange­les Times)

- “help­ing con­sumers get a good night’s sleep has become a pri­or­ity for most of the top-tier U.S. health insur­ance com­pa­nies, includ­ing Well­Point, Aetna, Cigna, Kaiser Per­ma­nente and sev­eral Blue Cross plans. Their new pro­grams don’t involve sleep­ing pills. Instead, insur­ers are advo­cat­ing the use of cog­ni­tive behav­ior ther­apy. Tra­di­tion­ally, the ther­apy has been done largely through face-to-face ses­sions, but many of the pro­grams are now avail­able online.”

- “And use of sleep­ing pills has sky­rock­eted. A study this year Read the rest of this entry »

Dr. Adrian Preda, our newest Expert Con­trib­u­tor, writes today the first in a series of thought-provoking arti­cles, chal­leng­ing us to think about phys­i­cal exer­cise as the best and most unap­pre­ci­ated form of “brain exer­cise”. A superb article.

And one thing is clear, he points out: “the brain really likes it when it’s asked to be “active”. Pas­sive audi­ences, which are spoon fed infor­ma­tion, score less well when tested on reten­tion and under­stand­ing of the pre­sented mate­r­ial than audi­ences that were kept engaged through the process.”

So, will you write a com­ment below and con­tribute to an engag­ing con­ver­sa­tion? Thoughts? reac­tions? ques­tions?
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Don’t ignore plain old com­mon sense.

Brain Lessons Part 1

– By Adrian Preda, M.D.

Let me start with a list of com­mon biases: expen­sive is bet­ter than cheap, free is of dubi­ous value (why would then be free?), rare is likely to be valu­able, and while new is bet­ter than old, ancient is always best. Which explains a com­mon sce­nario that is reen­acted about twice a week in my office. It starts like this: a patient shows me a fancy look­ing bot­tle of the brain sup­ple­ment of the week: ancient roots with obscure names mixed together in another novel com­bi­na­tion which you can exclu­sively find in that one and only store (rar­ity oblige!). And not to for­get: it ain’t cheap either! Of course, there it is, the per­fect the recipe for suc­cess: ancient yet new, rare and expen­sive. It got to be good! But is it, really?

Read the rest of this entry »

A fun arti­cle from the BBC high­lights some of the lat­est entries to the 2.5 billion-word data­base of words in the Collins Eng­lish Dic­tio­nary, 9th edition.

We were of course biased and happy to see “brain­food” as a newly minted word. Accord­ing to Webster’s New Mil­len­nium™ Dic­tio­nary of Eng­lish, they define “brain food”:

Part of Speech: n
Def­i­n­i­tion: any food that is con­sid­ered to aid intel­li­gence, mem­ory, or cre­ativ­ity; by exten­sion, any intel­lec­tual sustenance

We’d like to add Sharp­Brains to the list of brain foods! If you need some puz­zles to pick up your men­tal metab­o­lism, see how you do on these. Or maybe delve into some sci­ence and see if that expands your men­tal waist­line a bit. Just save room for dessert!