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Experts call for an Australian nanosafety standards body

Date: 13/12/2017

Academics at the University of Sydney are calling for the establishment of a national standards body to monitor the safety of nanomaterials commonly found in food, house paint, supplements and cosmetics sold in Australia.

Some of these products, such as colloidal silver and titanium dioxide, are restricted or under review in the European Union but freely available in the Australian market.

Associate Professor Chrzanowski is an adviser to the World Health Organisation on nanosafety. He said that the revolution in nanotechnology has been overwhelmingly positive for human health, particularly in improved drug delivery. However, he said that the science is developing faster than our regulatory oversight: “There are new nanoparticles being synthesised every day and the truth is we don’t know exactly what impact they can have on human health.”

“We are calling for the establishment of Nanosafety Australia to work with existing regulatory bodies to ensure that we fully understand any risks we face from introducing nanomaterials into our diet and environment.”

Associate Professor Chrzanowski and Dr Laurence Macia, an immunologist in University of Sydney’s School of Medical Sciences, delivered a talk at a Nanosafety Symposium about the impact of food-grade titanium dioxide on the immune system.

“Titanium dioxide is found in toothpaste, icing and in coatings for chewing gum and other sweets, such as Mentos. It’s even a recommended additive in at least one recipe on the MasterChef website. My research is looking at the impact of titanium dioxide on gut microbia and how this can affect the human immune system. There is a debate in the EU about this already. France and Germany have removed some products that contain nanomaterials, such as titanium dioxide, and it is a requirement products are labelled to show they have nanomaterials, but there isn’t even a discussion in Australia. We actually don’t know the impact these materials have on our immune systems over time.”

– Dr Laurence Macia, an immunologist in University of Sydney’s School of Medical Sciences

“Nanotechnology is delivering profoundly positive changes for health and medicine, including new ways to diagnose diseases early. Nanotechnology is also allowing us to deliver medicines precisely to target cells and to produce implantable medical devices for a wide range of clinical indications, including heart disease, hearing loss, intractable wounds and arthritis. However we must also ensure we fully understand the impacts new technology has on society. That is the essential mission of Sydney Nano: to discover, develop and harness nanotechnology for the benefit of humanity.”

– Professor Susan Pond, director of the University of Sydney Nano Institute

Source: University of Sydney

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MWCNT-7 is classified by IARC as ‘possibly carcinogenic to humans’ (Group 2B).