Medical journal "The Lancet" published a major study, "Global, regional, and national comparative risk assessment of 84 behavioural, environmental and occupational, and metabolic risks or clusters of risks, 1990–2016: a systematic analysis for the Global Burden of Disease Study 2016", in November 2017. The scientific conclusions with regards to snus was the following. "There is sufficient evidence that chewing tobacco and other products of similar toxicity cause excess risk of oral and oesophageal cancer while, at this time, existing evidence does not support attributing burden to snus or similar smokeless tobacco products." ...while for snus or snuff we did not find sufficient evidence of a RR (relative risk) greater than one for any health outcome." A relative risk of 1.0, means you are average - [there is no difference in risk between the control and experimental groups".