People who used e-cigarettes in the past were 21 per cent more likely to develop respiratory disease and those who were current e-cigarette users had a 43 per cent increased risk warn researchers. The study published in the journal JAMA Network Open provides some of the very first longitudinal evidence on the harms associated with e-cigarette products. In recent years we have seen a dramatic increase in e-cigarette use among youth and young adults which threatens to reverse decades of hard-fought gains said study author Andrew Stokes from the Boston University School of Public Health (BUSPH) in the US. This