(08-09-10) Insulin resistance, type 2 diabetes linked to Alzheimer's

WASHINGTON ? People with insulin resistance and type 2 diabetes are at higher
risk of developing plaques associated with Alzheimer's, Japanese researchers
said in a study out Wednesday.
The research, published in the American Academy of Neurology, involved 135
people with an average age of 67 from Hisayama, Japan.
The group was tested for blood sugar levels and followed over a period of 10-
15 years to detect signs of Alzheimer's.
During that time, around 16 percent developed the neuro-degenerative disease
that affects cognitive functions -- chiefly loss of memory, behavior and social
adaptation.
After the participants died, researchers examined their brains for plaques and
tangles, which are physical signs of Alzheimer's -- and found that 65 percent
had plaques.
The researchers found that people who gave abnormal results for blood sugar
control had an increased risk of developing plaques.
Plaques were found in 72 percent of people with insulin resistance and 62
percent of people with no indication of insulin resistance -- the stage before
diabetes when insulin, a hormone in the body, becomes less effective in
lowering blood sugar.
"Further studies are needed to determine if insulin resistance is a cause of
the development of these plaques," said study author Kensuke Sasaki, with
Kyushu University in Fukuoka, Japan.
However, he added, "it's possible that by controlling or preventing diabetes,
we might also be helping to prevent Alzheimer's disease."
"Type 2 diabetes and Alzheimer's disease are two epidemics growing at alarming
levels around the world," Sasaki said.
"With the rising obesity rates and the fact that obesity is related to the
rise in type 2 diabetes, these results are very concerning," he added.
An estimated 37 million people worldwide, including 5.3 million in the United
States, live with dementia, with Alzheimer's disease causing the majority of
cases, according to the World Health Organization (WHO).

Source: AFP

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