Tag Archives: Higher Learning

New Study: The More Education You Have, The Slower Your Brain Ages

A group of Danish researchers recently made an interesting discovery about the relationship between our education level and how fast we age.

The researchers were led by Eigil Rostrup, who works as a doctor at Denmark’s Glostrup Hospital.

Glostrup Hospital in Denmark

The study, published in the journal Human Brain Mapping, was based off of data from a group of 2,400 boys who had been born in the Greater Copenhagen area in 1953. The boys were tested both physically and mentally at the age of 20, and again when they were 57.

The testing gathered data on the participants general state of health, as well as their weights, smoking habits and IQs.

After the second round of testing at age 57, the researchers invited 200 men to the Glostrup Hospital for additional research: the 100 men with the best scores compared to their first test (at age 20), and the 100 men with the worst scores compared to their first test.

“We asked the participants to lie completely still in the MR-scanner without doing anything. Once in a while a light would flash in the scanner and at the same time the participant had to move his fingers,”

said Rostrup. This allowed the researchers to see how fast the men’s brains were able to switch from “default mode” (ie. when our brain is relaxed) to problem solving mode. Moving your fingers when a light comes on may not seem like a complex problem, but problem solving (even for the most basic problems) all happens in one region of the brain.

The prefrontal cortex, where higher-level thinking and problem solving takes place (our “Default Mode” network is located in the frontal cortex, the posterior cingulate cortex and the parietal lobe). Click to enlarge

Rostrup and his team found that the men who had received a better education were able to more quickly and efficiently switch from default mode to problem solving mode than those with the least amount of education.

The findings suggest that an education or job that challenges you regularly can actually stave off diseases related to brain aging like dementia and Alzheimer’s. Here’s Rostrup again:

“In young people the brain quickly and efficiently switches from the default mode to problem-solving activity. But in elderly people, and especially those who are demented or suffer from Alzheimer’s, this change is slow and inefficient…

The better our brains manage this change from rest to problem-solving when we are 60, the better equipped we will be at the age of 80 when it comes to handling the tasks of daily life and avoiding the symptoms that are especially common in patients with dementia, including Alzheimer’s.”

The change in brain activity as Alzheimer’s sets in. Click to enlarge

Researchers and neuroscientists alike hope that this new study can help doctors predict conditions like dementia and Alzheimer’s ahead of time.

One thing is for sure though: mental exercise keeps the mind young just like physical exercise does for our bodies. Keep that mind sharp!

Read the original story from Science Nordic here.

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This Animal Isn’t A Snake. Think You Can Guess What It Really Is? (Photos)

Professor Daniel Janzen, a biology professor from the University of Pennsylvania, has spent years of his life cataloguing and photographing a very unique group of creatures: caterpillars that defend themselves against predators by looking and acting like snakes.

Check out some more pictures of “Snake Caterpillars” taken by Professor Janzen below:

Snake caterpillars can be found in Costa Rica, Guatemala, Belize, and some parts of Mexico. Their markings resemble a snake’s head, which they can actually use to “strike” at would be predators (though they obviously can’t bite like a real snake would).

Janzen is an ecologist and what most would call a caterpillar expert. He’s been tracking these insects in Costa Rica since 1978 and  has been an expert in the field of entomology (the study of insects) for 50 years.

Dan Janzen, with a prehensile-tailed porcupine on his shoulder (Photo: Winnie Hallwachs / NOVA)

He splits his time between his labs and the field, spending half the year at the University and the other half in Central America, searching for strange new species of insect like the snake caterpillars.

Man Installs Charity Fridge Outside His House That’s Open To The Public

According to Gulfnews.com…

“Saudi and Gulf citizens have heaped praise on a man who placed a refrigerator in front of his house in the northern Saudi city of Hail and invited people to donate food to help the needy.”

The man wanted to figure out a way to help those in need without putting them through the shame of having to beg. The fridge not only spares those in need the shame of asking for food, but also allows anyone who wants to donate to leave food for others.

The fridge in front of the man’s house (Photo: Mezmez)

The man behind the refrigerator chose to remain anonymous. In fact, the idea didn’t get international attention until  religious scholar Shaikh Mohammad Al Araifi praised the charitable act on his Twitter account, saying: 

“I’ve always said the people of Hail are generous. A man puts a fridge outside his house for leftover food; an indirect act of charity for the needy… Oh how I love you, Hail!” “

This noble act of charity has not only inspired local Saudi Arabians, but also people around the world via Twitter. Ideas like this don’t require a lot of time or money, but can have a major impact on the lives of those around us. Sometimes finding a way to help just takes a little creativity.