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Arsenic exposure linked to diabetes
Monday April 08, 2013 10:49:01 PM,
IANS
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Los Angeles: For the
first time scientists have established a link between arsenic
exposure in youngsters and development of Type 2 diabetes.
A new study found that higher levels of mercury exposure in young
adults increased their risks for Type 2 diabetes later in life by
65 percent.
The study, led by Indiana University School of Public
Health-Bloomington epidemiologist Ka He, is the first to establish
the link between mercury and diabetes in humans.
The study paints a complicated nutritional picture because the
main source of mercury in humans comes from the consumption of
fish and shellfish, nearly all of which contain traces of mercury,
reports Science Daily.
Fish and shellfish also contain protein and other nutrients, such
as magnesium and omega-3 poly-unsaturated fatty acids, that make
them important for a healthy diet.
In the study, published online early in the journal Diabetes Care,
the people with the highest levels of mercury also appeared to
have healthier lifestyles -- lower body mass indexes and smaller
waist circumferences -- than others.
They also ate more fish, which is a possible marker of healthy
diet or higher social economic status. Risk factors for Type 2
diabetes include being overweight.
According to He, these findings point to the importance of
selecting fish known to have low levels of mercury such as shrimp,
salmon and catfish, and avoiding fish with higher levels such as
swordfish and shark.
"It is likely that the overall health impact of fish consumption
may reflect the interactions of nutrients and contaminants in
fish. Thus, studying any of these nutrients and contaminants such
as mercury should consider confounding from other components in
fish," He and the authors wrote in the study.
"In the current study, the association between mercury exposure
and diabetes incidence was substantially strengthened after
controlling for intake of LCN-3PUFAs (omega-3) and magnesium," the
study noted.
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