Sometimes it's nice to have science back up what we (and by
'we' I mean women) already know - that women have better memories than men. Not
only is a man's memory worse than a woman's, but the part of the brain that controls
memories is smaller in men.

Dr. Clifford Jack of the Mayo Clinic and fellow
researchers studied a group of 1,246 cognitively normal people between the
ages of 30 and 95. Overall they found that while memory started to decline for
both sexes at age 30, male memory was worse than females' overall, especially
after age 40.
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This is due, in part, to the hippocampus being smaller in
men than women, especially after age 60. The hippocampus is the part of the
brain that controls memory.
"It's true, women's brains are smaller than men's
brains, but brain size scales with your height," Jack said. "And so
if you correct for head size, which we did, women's hippocampus and verbal
memory is better than men's."
The protective effects of hormones keep a woman's
hippocampus larger, especially estrogen which has been shown to shield
pre-menopausal women from hypertension, bone loss, and heart disease. Progesterone, luteinizing hormone, and blood
volume also help increase and maintain a woman's memory. This goes away for
some women over the age of 50, but they still have had a lifetime of protective
advantage giving them a residual effect for a number of years.
Dr. Jack also noted that one unusual, and hopeful, finding
of the study was that memory and brain-volume starts to decline in your 30s and
continue through old age occur well before there is evidence of Alzheimer's
disease.
This means that being forgetful at age 50 or 60 may just be
evidence of your brain aging instead of evidence of early Alzheimer's disease.
Still, your brain is going to age. Experts agree that anyone
can benefit and delay signs of neurodegeneration by maintaining a healthy
lifestyle through exercise of the body and brain.
Doctors recommend that you keep learning. Learn a new
language, develop a skill such as piano or guitar, and take up painting or
drawing. And a half hour interval burst of aerobic exercise helps your brain
significantly.
And even today, do
you trust your memory?
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