Effect Food Additives that Alter Nutrient Absorption

Titanium oxide is used in some chocolate to give it a smooth texture; in donuts to provide color; in skimmed milks for a brighter, more opaque appearance and in some toothpaste. Researchers at the Binghamton University, State University of New Yorkexposed a small intestinal cell culture model to the physiological equivalent of a meal's worth of titanium oxide nanoparticles--30 nanometers across--over four hours (acute exposure), or three meal's worth over five days (chronic exposure).