A policy statement by the UK's Faculty of Public Health recognized that there were potential benefits from the use of e-cigarettes but raised concerns that their effectiveness was not yet proven and that e-cigarettes were less effective than nicotine replacement therapy. It also raised concerns regarding dual usage of e-cigarettes and tobacco, concerns regarding advertising and young people and finally concerns regarding e-cigarettes undermining "decades of lobbying by public health related organisations" that led to the "smoking ban and tobacco control legislation".