Researchers investigating brain size and mental ability say their work offers evidence that education protects the mind from the brain’s physical deterioration.
It is known that the brain shrinks as the body ages, but the effects on mental ability are different from person to person. Interestingly, in a study of elderly men and women, those who had more education actually had more brain shrinkage.
"That may seem like bad news," said study author Dr. Edward Coffey, a professor of psychiatry and of neurology at Henry Ford Health System in Detroit. However, he explained, the finding suggests that education allows people to withstand more brain-tissue loss before their mental functioning begins to break down.
The study, published in the July issue of Neurology, is the first to provide biological evidence to support a concept called the "reserve" hypothesis, according to the researchers. In recent years, investigators have developed th
A. The brain of an aged person shrinks 5% every 10 years.
B. The brain of an adult person shrinks 2.5% every 10 years.
C. The cerebrospinal fluid of a person with 4 years of education may increase only slightly.
D. The cerebrospinal fluid of a person with 8 years of education may increase by 17.7 millimeters.
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