"But now the Italian police are on the case. According to Corriere, the company distributing them in Italy is under investigation since the plastic bands are marketed as offering pseudo-health benefits, and in order to make statements like this, Italian law demands proof and justification."
It's the same in the UK, the Trade Descriptions Act (1968) makes it an offence for a trader to apply, by any means, false or misleading statements.
That is full of win!!