How to avoid that memory decline which begins at 30
January 2nd 2009 21:26
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Scientific American, the holy grail of scientific research has come out in support of exercise to assist your memory. It also looks at the damaging effects of blood sugar imabalances with the brain which comes with increasing age and with diabetes.
It refers to effects on the dentate gyrus and the hippocampus but we'll leave the technical aspects for another post.
The research used fMRI techniques in support of the findings, using different groups of people with different conditions and medical situations and comparing also those who did not demonstrate any signs of these other medical problems.
Researchers felt their work supported former observations that EXERCISE benefits the dentate gyrus whereas previously scientists believed that physical activity reduced the risk of age-related memory loss by allowing faster absorption of glucose into muscle cells. The dentate gyrus could be the missing link.
Glucose metabolism naturally slows with age, and memory begins to decline in our 30s, says co-author Scott Small, an associate professor of neurology at Columbia University Medical Center in New York. The new study suggests a possible association between the two, because elevated blood sugar appears to damage the dentate gyrus, Small says.
The dentate gyrus's exact function is unknown. But it's one of several circuits in the hippocampus that, if disrupted, impairs memory, such as a person's ability to learn the names of new people or to remember where they parked their car.
The dentate gyrus's exact function is unknown. But it's one of several circuits in the hippocampus that, if disrupted, impairs memory, such as a person's ability to learn the names of new people or to remember where they parked their car.
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