Nanoparticles in food, vitamins could harm human health

Feb. 16, 2012
 
Nanoparticles in food, vitamins could harm human health
 
 

Billions of engineered nanoparticles in foods and pharmaceuticals are ingested by humans daily, and new Cornell research warns they may be more harmful to health than previously thought.

A research collaboration led by Michael Shuler, the Samuel B. Eckert Professor of Chemical Engineering and the James and Marsha McCormick Chair of Biomedical Engineering, studied how large doses of polystyrene nanoparticles -- a common, FDA-approved material found in substances from food additives to vitamins -- affected how well chickens absorbed iron, an essential nutrient, into their cells.

The results were reported online Feb. 12 in the journal Nature Nanotechnology.

According to the study, high-intensity, short-term exposure to the particles initially blocked iron absorption, whereas longer-term exposure caused intestinal cell structures to change, allowing for a compensating uptick in iron absorption.

FULL STORY: http://www.news.cornell.edu/stories/Feb12/nanoparticlesHarmful.html

 

 

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