(Food-Beverage-News.Com, June 02, 2013 ) Toronto, Canada -- Zinc oxide is commonly added to dietary supplements as a source of zinc. However, several research studies in peer reviewed journals show that the nanoparticle is toxic to the body’s cells. In fact, a study in Biomedical and Environmental Services confirmed that zinc oxide is the most toxic nanoparticle compared to titanium dioxide, silicon dioxide, and aluminum oxide.
X.Q. Zhang and his team of researchers from the Southeast University in Nanjing, China conducted the study and found all tested all of the four above mentioned nanoparticles caused cellular mitochondrial dysfunctions, morphological modification and even apoptosis in human fetal lung fibroblasts. It was dose dependent, meaning that high high concentrations were related to high toxicity.
Compared with the other three types, zinc oxide was the most dangerous and toxic. Zinc oxide, titanium dioxide, silicon dioxide, and aluminum dioxide are all used in processed foods and many dietary supplements. Zinc and titanium dioxides were the most commonly used, especially in sunscreen and cosmetic products dealing with the skin.
Although those nanoparticles have never been studied for lengthy periods of time for safety, they are also commonly used in processed foods, such as boxed meals and pre-made mixes, such as for pancakes, baking goods and frying seasonings.
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