Mugihe urimo gukira kubagwa kwinshi cyangwa kwita kubantu ukunda, ibitanda bisanzwe ntibizatanga inkunga numutekano bisabwa.Mugihe habaye ubudahangarwa bwigihe kirekire, ibitanda byibitaro byo gukoresha murugo nibyiza cyane.FDA ivuga ko ibitanda byibitaro bigera kuri miriyoni 2,5 bikoreshwa muri Amerika yose, kubwimpamvu nyinshi: uburiri bwibitaro byo murugo bizatanga ihumure ryiza, ibintu byihariye, nibyiza byubuzima n’umutekano kubarwayi baryamye.