A large, 5-year study showed that the people in their 70s who were the most active and adhered the best to a Mediterranean-style diet were 61–67 percent less likely to develop Alzheimer’s disease compared with the least active and least Mediterranean-minded of the group.

Exercise
The most active in the study group got about an hour and a half of exercise weekly. That’s just a few 30-minute walks a week — a pretty manageable commitment. Better yet, aim to walk 30 minutes every day.

Diet
People with the lowest dementia risk ate the highest amounts of fruit, veggies, legumes, and fish, but less meat and dairy products. Monounsaturated fats, like olive oil, also accounted for more of their fat intake than saturated fats. All very typical ratios in a Mediterranean-style diet that doctors and health experts alike recommend for all sorts of reasons. These nutrient-dense, healthy-fat-focused foods could help protect brains against disease and cognitive decline and help protect the body from lots of other bad things, too.

A new study from the University of California in Los Angeles suggests that piling on the pounds can shrink brains of older people, making them more vulnerable to cognitive problems.

According to Paul Thompson, brains of elderly people looked 16 years older than the brains of leaner peers.

The research involving 94 people in their 70s showed that people with higher body mass indexes had smaller brains on average, with the frontal and temporal lobes – important for planning and memory, respectively – particularly affected.

While no one knows whether these people are more likely to develop dementia, a smaller brain is indicative of destructive processes that can develop into dementia.

The team also found that the brains of the 51 overweight people were 6 per cent smaller than those of their normal-weight counterparts, on average, and those of the 14 obese people were 8 per cent smaller.

“The brains of overweight people looked eight years older than the brains of those who were lean, and 16 years older in obese people,” New Scientist quoted Thompson as saying.

Thompson suggests that as increased body fat ups the chances of having clogged arteries, which can reduce blood and oxygen flow to brain cells, the resulting reduction in metabolism could cause brain cell death and the shrinking seen.

He said that exercise protects the very brain regions that had shrunk.

“The most strenuous kind of exercise can save about the same amount of brain tissue that is lost in the obese,” he said.

The findings appear in journal Human Brain Mapping.

Two studies published in this week’s Journal of the American Medical Association add to evidence that long-term lifestyle habits may reduce the risk of mental decline in old age.

The first study, a long-term look at 1,880 elderly people in New York City, found that a Mediterranean-type diet and physical activity each were linked to less risk for Alzheimer’s disease. The Taub Institute for Research on Alzheimer’s Disease and the Aging Brain at Columbia University Medical Center released the data as part of a larger research project on aging.

The second study, a shorter-term observation of 1,410 patients in France, found some correlation between a Mediterranean-type diet and slower cognitive damage.

Nikolaos Scarmeas, the author of the first study, grew up eating fish and vegetables in Athens, Greece. Now the neurologist suggests more people take up his mother’s cooking. Marked by high consumption of foods such as vegetables, legumes and cereals, served with olive oil, in addition to moderate fish and alcohol intake, the traditional diet has long conferred better cardiovascular health.

Starting in 1992, researchers at Columbia University monitored elderly patients every 18 months for diet, exercise and mental health, in addition to a number of controls including age, sex and education. “This is one of the first studies to tease apart the independent contributions of diet and exercise for dementia prevention,” says Ronald Petersen, director of the Alzheimer’s Disease Research Center at the Mayo Clinic in Rochester, Minn., who was not involved in the research. “It suggests that aging need not be a passive process.”

These studies are observational and not definitive, but they hint at what might reduce the chances of Alzheimer’s or dementia. In the Columbia research, those who adhered most closely to the diet reduced their risk for Alzheimer’s by 40%, while those with the highest physical activity decreased their risk 33%, compared with people who didn’t adhere closely to the diet or were not physically active.

The French study found that subjects who adhered to the Mediterranean-type diet experienced a slower rate of mental decline than those who did not eat the diet, but did not prove a link for dementia, which requires a clinical assessment of a variety of mental and social functions.

Doctors in the field are careful to note that none of these findings demonstrate a causal relationship, but instead reflect the advantages of a continual healthy lifestyle. “The benefits don’t just occur at age 70 when you suddenly stop eating McDonald’s and start eating Brussels sprouts,” says David Knopman, a neurologist at the Mayo Clinic in Rochester, Minn., who wrote the editorial accompanying the studies in JAMA and wasn’t involved in either study. His editorial highlights confounding variables in the studies. “Healthy diet and exercise is part of a package of lifelong healthy living.”

Zaven Khachaturian, a senior science adviser to the Alzheimer’s Association, agrees. “This offers interesting insight but we need to turn it now into clinical trials,” says the former director of the Office of Alzheimer’s Disease Research at the National Institutes of Health.

These findings arrive a few weeks after new research identified a gene that could help predict who will develop Alzheimer’s—the leading cause of dementia—and at what age. The report, given in mid-July at the International Conference on Alzheimer’s Disease, concentrated on DNA surrounding the ApoE gene. Researchers say more studies are needed before the findings can be confirmed.

For now, Dr. Scarmeas says his studies strongly suggest that a Mediterranean diet and exercise both confer independent and positive health benefits. But together, they are even better.

“The relative risk reduction for Alzheimer’s is about 60% when you combine the diet and exercise,” he says.

Original Article by carrie.porter@wsj.com

Eating fatty food appears to take an almost immediate toll on both short-term memory and exercise performance, according to new research on rats and people.

It’s already known that long-term consumption of a high-fat diet is associated with weight gain, heart disease and declines in cognitive function. But the new research shows how indulging in fatty foods over the course of a few days can affect the brain and body long before the extra pounds show up.

To determine the effect of a fatty diet on memory and muscle performance, researchers studied 32 rats that were fed low-fat rat chow and trained for two months to complete a challenging maze. The maze included eight different paths that ended with a treat of sweetened condensed milk. The goal was for the rat to find each treat without doubling back into a corridor where it had already been. The maze was wiped down with alcohol, so the rat had to rely on memory rather than sense of smell.

All of the rats studied had mastered the maze, finding at least six or seven of the eight treats before making a mistake. Some rats even found all eight on the first try.

Then half the rats were switched to high-fat rat chow (comprised of 55 percent fat), while the remaining rats stayed on their regular chow (which had 7.5 percent fat). After four days, the rats eating the fatty chow began to falter on the maze test — all of them did worse than when they were on their regular chow. On average, the rats on the fatty diet found only five treats before making a mistake. The rats who stayed with their regular food continued the same high level of performance on the maze, finding six or more treats before making a mistake.

Read rest of article here.

Most people spend 12 to 16 years in school pushing their brain to achieve its maximum potential. Schools and colleges make sure a person receives a well rounded education and develops all of their cognitive skills. As soon as a person graduates from school, they immediately become focused on just the skills needed for their career and slowly let their other cognitive skills decay.  With people changing jobs more frequently than ever before, it is important to maintain and even improve all of their cognitive abilities.

By frequently utilizing cognitive game sites like Myfitbrain, a person can stop the decline in their cognitive abilities that they do not use on a daily basis.  Our brains reach their peak efficiencies between the ages of 25 to 27.  This is when our brain finishes maturing and myelination completes.  Myelination allows the nerve impulse to travel down the nerves as fast as possible.  From this point on in a person’s life, aging related activities begin to slow down how fast nerve impulses flow and how fast our brain can react.  Our ability to absorb new information is limitless, but the amount of time it takes to absorb new information slows gradually.

A person’s ability to retrieve that information also begins to slow down.  As we go through life we learn tricks to make that information retrieval as efficient as possible.  By utilizing these tricks, older people can often outperform younger people who have faster minds, but do not have the built up years of experience.

The neuroplasticity of the brain allows for the brain to continually change as we get older.  By exercising, eating right, minimizing stress, and getting a good night sleep we prepare our minds for the information that it will receive on a daily basis.  All of the daily input we receive changes the mind little by little.  Our minds have the ability to continuously improve in many areas if we challenge it.  Many people do not challenge their minds and stare at the TV or spends hours daily on Facebook or Twitter.  By spending 30 – 60 minutes per day on brain games like those found on Myfitbrain, a person can improve their cognitive abilities and slow down or reverse the decay.

Doesn’t the most important organ in your body deserve a little bit of focused brain exercise on a regular basis?

Over the past decades, videogames have undoubtedly come under fire from a multitude of sources, whether it’s a bill claiming games incite violence, a musician damning Guitar Hero or agenda-driven researchers coming to questionable conclusions.

Just like prescription drugs or food, gaming outside the bounds of moderation can lead to serious drawbacks. But most reasonable experts in fields such as psychology, education and research acknowledge that interactive entertainment has important benefits that have the potential to shape the world’s future.

An important idea to keep in mind: Iowa State University psychologist Douglas Gentile said at the 2008 American Psychologist Association convention, “The big picture is that there are several dimensions on which games have effects. [Dimensions include] the amount they are played, the content of each game, what you have to pay attention to on the screen, and how you control the motions.

“This means that games are not ‘good’ or ‘bad,’ but are powerful educational tools and have many effects we might not have expected they could.”

Edge spoke with Chicago-based psychologist Dr. Kourosh Dini, Sharp Brains CEO and education expert Alvaro Fernandez and XEODesign president Nicole Lazzaro, in addition to compiling other authoritative opinions on 15 of gaming’s most prominent benefits.

Are you interested in reading about the 15 benefits of gaming? If so, click the following link: 15 Benefits

Scientists are finding that the adult human brain is far more malleable than they once thought. Your behavior and environment can cause substantial rewiring of your brain or a reorganization of its functions.

Studies have shown that exercise can improve the brain’s executive skills, which include planning, organizing and multitasking. What you eat can also influence how effectively your brain operates.

Activities such as listening to music, playing video games and meditating may boost cognitive performance as well.
Interested in learning more?

Amputees sometimes experience phantom limb sensations, feeling pain, itching or other impulses coming from limbs that no longer exist. Neuroscientist Vilayanur S. Ramachandran worked with patients who had so-called phantom limbs, including Tom, a man who had lost one of his arms.

Ramachandran discovered that if he stroked Tom’s face, Tom felt like his missing fingers were also being touched. Each part of the body is represented by a different region of the somatosensory cortex, and, as it happens, the region for the hand is adjacent to the region for the face. The neuroscientist deduced that a remarkable change had taken place in Tom’s somatosensory cortex.

Ramachandran concluded that because Tom’s cortex was no longer getting input from his missing hand, the region processing sensation from his face had slowly taken over the hand’s territory. So touching Tom’s face produced sensation in his nonexistent fingers.

Continue reading this article at: Six Ways