Big Dairy Is Putting Microscopic Pieces of Metal in Your Food
July 27, 2014
The rapid emergence of nanotechnology suggests that size does, indeed, matter. It turns out that if you break common substances like silver and nickel into really, really tiny particles-measured in nanometers, which are billionths of a meter.
For example, regular silver, the stuff of fancy tableware, doesn't have any obvious place in sock production. But nano-size silver particles apparently do. According to boosters, when embedded in the fabric of socks, microscopic silver particles are "strongly antibacterial to a wide range of pathogens, absorb sweat, and by killing bacteria help eliminate unpleasant foot odor." (By most definitions, a particle qualifies as "nano" when it's 100 nanometers wide or less. By contrast, a human hair clocks in at about 80,000 nanometers in diameter.)According to the Project on Emerging Nanotechnologies (PEN)—a joint venture of Virginia Tech and the Wilson Center—there are more than 1,600 nanotechnology-based consumer products on the market today. If SmartSilver Anti-Odor Nanotechnology Underwear sounds like a rather intimate application for this novel technology, consider that the PEN database lists 96 food items currently on US grocery shelves that contain unlabeled nano ingredients. Examples include Silk Original Soy Milk , Rice Dream Rice Drink, Hershey's Bliss Dark Chocolate , and Kraft's iconic American Cheese Singles, all of which now contain nano-size titanium dioxide.