Can’t teach an old dog new tricks? In studies on brain activation, people aged 40 or older perform noticeably worse in mental tasks that require focus, problem-solving abilities, decision-making, and other high-level thinking, all of which take place largely in the brain's prefrontal cortex. The difference is that young people mostly use the prefrontal cortex to solve problems, whereas older folks need to use a lot more of their brains at once to perform the same tasks. It’s considered a normal part of the mental decline of aging, but a recent Japanese study has shown that it’s not always inevitable. It looked at men aged between 64 and 75 with no signs of dementia or cognitive decline, and it found that those with the highest level of aerobic fitness were able to focus and make decisions using less of their brain, just like a young person. The upshot? The researchers believe that daily walking or mild jogging is enough to produce noticeable effects. |
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