A team headed by Kazuya Higashisaka (Nano Safety Science) of Osaka University has
established a mouse model showing that contrary to existing belief metal allergies are not triggered by metal
ions but by the release of ions within the body by metal nanoparticles that are naturally occurring within
and outside of the body.
(Team results were published in the May 31st electronic edition of English-language science journal Nature
Nanotechnology.) While the study showed onset of allergy was caused by nanoparticles composed of nickel or
silver, it also showed that allergies were not triggered by minimally ionizable metallic gold nanoparticles
and non-metal amorphous silica (silicon dioxide) nanoparticles. The study thus showed for the first time that
having the capacity to emit metal ions works in a significant way to trigger metal allergies.
(From Osaka University, National University Corporation press release of June 10, 2016)
Many studies have confirmed the safety of the platinum nanoparticles contained within our colloidal platinum
product, showing among other conclusions that they are not absorbed into the body from the digestive system
and do not penetrate the epidermis when applied with a transdermal patch.
The recent Osaka University study did not specifically include platinum nanoparticle data,
but because platinum nanoparticles do not emit ions similarly to the gold nanoparticles in the study,
it can be assumed that they are non-allergenic and safe for use.