Negative ion products

Negative ion products are products which claim to release negative ions and create positive health effects, although these claims are unsupported.{{cite journal |title=Naturally Occurring Radioactive Materials in Bracelets and Necklaces: Radiological Risk Evaluation |year=2021 |publisher=National Institutes of Health |pmc=8583333 |last1=Hassan |first1=H. J. |last2=Hashim |first2=S. |last3=Abu Hanifah |first3=N. Z. |last4=Ghoshal |first4=S. K. |last5=Sanusi |first5=M. S. |last6=Binti Suhailin |first6=F. H. |last7=Abdul Hadi |first7=M. F. |last8=Tahar |first8=R. M. |last9=Bradley |first9=D. A. |journal=International Journal of Environmental Research and Public Health |volume=18 |issue=21 |page=11170 |doi=10.3390/ijerph182111170 |pmid=34769689 |doi-access=free }} Many also claim to protect users from 5G radiation. These claims are likewise unsubstantiated. A market has developed for these products due to conspiracy theories about 5G.{{Cite news|last=Bateman|first=Tom|date=December 12, 2021|title=Radioactive 'anti-5G' jewellery banned in the Netherlands, but still on offer online|work=Euronews|url=https://www.euronews.com/next/2021/12/20/radioactive-anti-5g-jewellery-banned-in-the-netherlands-but-still-on-offer-online|access-date=February 2, 2022}} Many of these contain radioactive substances. In a test of these bracelets by the International Journal of Environmental Research and Public Health, samples were found to have a yearly dose of up to 1.22 millisieverts a year, well in excess of the 1 millisievert limit recommended by the International Commission on Radiological Protection. As a result, they were banned in the Netherlands.