Although, it does support my theory that brown rice is evil...
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Flickr/nebulux76 |
An egg atop black rice in a Parmesan cup |
Researchers have found unacceptably high levels of lead in rice imported into the U.S., particularly from China and Taiwan,
BBC News reports.
Some samples exceeded the "provisional total tolerable intake" (PTTI)
set by the Food and Drug Administration (FDA) by a factor of 120.
Dr Tsanangurayi Tongesayi of Monmouth University in New Jersey and
his colleagues tested a number of imported brands of rice, including
rice from Bhutan, Italy, China, Taiwan, India, Israel, the Czech
Republic and Thailand -- which accounts for 65 percent of U.S. imports.
(The U.S. imports about 7 percent of its rice.)
The scientists measured the lead levels in each country category and
calculated the lead intake on the basis of average daily consumption.
The results were presented at an American Chemical Society meeting, and
will be published in the
Journal of Environmental Science and Health, Part B.
Tongesayi and his colleagues found that the rice they tested
contained lead amounts significantly higher than the FDA's approved
PTTI levels.
"According to the FDA, they have to be more than 10 times the PTTI
levels [to cause a health concern], and our values were two to 12 times
higher than those 10 times," Tongesayi told BBC News. "So we can only
conclude that they can potentially cause harmful effects" -- especially
in children, who are more vulnerable to lead poisoning. Lead can damage
organs and the central nervous system and cause serious developmental
difficulties in children.
The factor of 120 (12 times higher than 10 times the PTTI) is for
Asian children, who are most susceptible because of their age and
comparatively high rice intake according to the study.
For non-Asian adults, the levels above the PTTI ranged from 20 to 40.
Rice from China and Taiwan had the highest lead levels, but all of the samples significantly exceeded the PTTIs.
The FDA says it will review the findings.
Because rice is grown in water, it is more susceptible than other
crops to environmental pollutants found in irrigation water and
groundwater. Previous studies have found high levels of
arsenic in rice, particularly brown rice.
The problem, Tongesayi told the BBC, are unhealthy agricultural practices around the world.
"If you look through the scientific literature, especially on India
and China, they irrigate their crops with raw sewage effluent and
untreated industrial effluent," he said.
Wow, great idea.
"Research has been done in those countries, and concerns have been raised because of those practices, but it's still ongoing."
Heavy metals in rice can even be traced to the increasing practice of
sending electronic waste to developing countries, and the air and water
pollution it leads to, he said.
He urges international regulations to govern the production and distribution of food.
Can we please do that stat?