Zvigadzirwa zvinopa hutano hwevanhu. Sekureva kweWHO, zvigadzirwa izvi zvinofanirwa kuwanikwa "nguva dzese, nehuwandu hwakakwana, mumhando dzakakodzera dzemuyero, zvine hunhu hwakakwana uye ruzivo rwakakwana, uye nemutengo unogona kutengwa nemunhu nenharaunda".