Archive for July, 2010

Exercise for A Stronger, Faster Brain

Neurogenesis through exerciseNeuroscientist Fred H. Gage and his colleagues at the Salk Institute examined brain samples from mice. All of the mice showed vivid proof of what’s known as “neurogenesis,” or the creation of new neurons. But the brains of more athletic mice in particular showed many more. These mice, the ones that scampered on running wheels, were producing two to three times as many new neurons as the mice that didn’t exercise.

Since Gage’s discovery, scientists have been finding more evidence that the human brain is not only capable of renewing itself but that exercise speeds the process.

“We’ve always known that our brains control our behavior,” Gage says, “but not that our behavior could control and change the structure of our brains.”

Read the rest of this entry »

Positivity for Survival?

It’s good for our overall health to laugh and give thanks often, find moments of peace, and to practice joyfulness.

It’s good for our overall health to laugh and give thanks often, find moments of peace, and to practice joyfulness.

Why do we have positive emotions? What purpose other than making us “feel good” do they serve – especially as they relate to survival of the species? The survival value of negative emotions seems fairly obvious: Fear helps us avoid attackers, and disgust alerts us to poisons, and so forth. But what possible survival or evolutionary good are joy, contentment, gratitude, and curiosity?

University of North Carolina psychologist Barbara Fredrickson studies the behavior of young patas monkeys, who love to play tag on the savannahs of West Africa, as both an example and metaphor for her “broaden and build” theory of positive emotions. When they are being chased, young patas monkeys will  fling themselves on to saplings, which bend and catapult them in unexpected directions.

The young monkeys are engaging in what appears to be pointless fun – just for the sheer joy of it. In fact, their joy and play are creating a reserve of body memories that later could keep them alive. In adulthood, when fleeing a predator, they will fling themselves on to saplings, which bend and catapult them to escape.

Fredrickson’s theory is positive emotions are life savers. Fredrickson believes these emotions increase cognitive flexibility, conquer harmful negativity, and create a reservoir of resilience that helps us cope with life’s challenges. She has published her studies in a new book, Positivity (Crown Publishers).

Read the rest of this entry »

Overweight?

American Marketing Scam #1 - If you LOOK sexy, you must BE qualified, good enough, smart enough, honest enough, or whatever enough... - deserving of whatever it is you want.

American Marketing Scam #1 – If you LOOK sexy, you must BE qualified, good enough, smart enough, honest enough, or whatever enough… – deserving of whatever it is you want.

In the USA obesity – body mass index above 30 – is pandemic. My sense is that the “problem” has become societal as well as personal. Morgan Spurlock’s “Supersize Me” illustrated one important fact – fast food can make you fast fat. Our wealthy society has created a situation where most Americans under-exercise and overeat. Further, our lifestyles of cubicles and computers and fast food mean many Americans don’t see the kitchen for weeks on end.

On the psychological side, there is the ever-present push here for you to eat more. Every other TV commercial is about FOOD – the others are about CARS – and ALL use thin, sexy models to sell their wares. Ack!

Read the rest of this entry »

More Chocolate Magic

Dark chocolate - my miracle drug of choice.

Dark chocolate – my miracle drug of choice.

Researchers at Johns Hopkins have discovered that a compound in dark chocolate may protect the brain after a stroke by increasing cellular signals already known to shield nerve cells from damage. They found that mice given the compound suffered significantly less brain damage after induced stroke – even when given to them hours afterward.

OMG! Is there nothing dark chocolate can’t do?!

It seems the more research is done on the miracle drug, dark chocolate, the more amazing things they find it will do for you.

I’d write more about it now, but I gotta get down to the See’s Candy Store. I gotta replace my emergency supplies. You never know when I might have a stroke and need it! And, of course, it’s only reasonable that I test for quality before I have to use it for real – don’t want the EMTs stuffing BAD chocolate down my throat at the moment I need the good stuff!

Be right back…

And what was that about my weight-loss regime? Hey! You know what they say? A pound of prevention……..

The Scotoma Solution

A scotoma is a mental situation in which one locks on to one idea and excludes all others – known as the “lock on lock out” principle. We all do it – it’s our human way of avoiding overwhelm when faced with too many choices. However, a scotoma can get you into trouble as we shall explore here.

SpongebobIn a Spongebob Squarepants cartoon, Spongebob gets up one morning and thinks he’ll create a fantastic dessert for himself. Unfortunately, his choice of ingredients cause him to have horrific halitosis (bad breath). Spongebob proceeds to go outside, where he meets several people, all of whom scream and run away from him as soon as he opens his mouth and says, “Hello.”

His conclusion – “I must be terribly ugly!”
Read the rest of this entry »