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Taking vitamins
C and E is not an effective method to prevent dementia, including
Alzheimer’s disease.
It has been suggested
by researchers that the development of dementia, caused by
the progressive death of brain cells, may be influenced by
the formation of free radicals. As these free radicals are
blocked by antioxidants such as vitamins C and E, some believe
that taking these supplements may reduce the risk of developing
this disease.
But, as shown by
a new study of over 2,000 Japanese-American men, this is not
the case. The men, who were born in the early 1900s, were
questioned about their intake of supplements. There was no
decrease in risk of dementia among men who took both vitamin
C and E for short- or long-term periods as compared with those
who took no supplements. Taking the vitamins separately did
not result in an association either.
Dementia affects
some five percent of Americans aged 65 years or older. Researchers
say that further studies are needed to determine whether taking
supplements long-term will influence the risk of dementia.
JAMA
November 13, 2002;288:2266-2268
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