via digg and daily mail
Old age is often blamed for causing us to misplace car keys, forget a word or lose our train of thought.
But new research shows that many well-known effects of ageing may start decades before our twilight years.
According to scientists, our mental abilities begin to decline from the age of 27 after reaching a peak at 22.
The researchers studied 2,000 men and women aged 18 to 60 over seven years. The people involved – who were mostly in good health and well-educated – had to solve visual puzzles, recall words and story details and spot patterns in letters and symbols.
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