What is snus and how is it used?
Snus is an oral tobacco product that has been used for more than 300 years. Named after the Swedish word for snuff, snus is made from ground tobacco leaves that are mixed with salt and water. It may also contain food-grade tobacco smoke aroma, or other flavourings, and is placed under the upper lip either in small teabag-like sachets called portion snus or loose. Snus is most widely used in Scandinavia, particularly in Sweden and Norway, where a form of the product known as ‘Swedish snus’ dominates the market.
Snus is sometimes confused with a different product, nicotine pouches, as both are placed under the lip. But, unlike snus, nicotine pouches do not contain tobacco. Instead, they are made from plant fibres impregnated with nicotine.[i]
What makes snus safer than cigarettes or high-risk oral tobaccos?
The health impacts of smoking are now well understood to be caused by the combustion process that produces a cocktail of harmful chemicals found in smoke. Snus use differs from cigarette use because it does not involve the burning of tobacco and therefore avoids many of the risks associated with smoking.
Swedish snus is also distinct from other types of oral tobacco products because of the way it is produced. Unlike some other smokeless tobaccos, the tobacco in Swedish snus is not fermented but is pasteurised instead. This heat-treatment process inhibits the growth of bacteria that help the formation of a range of toxicants found in tobacco products. Pasteurisation also contributes to its chemical stability and enhances the shelf-life of the final product.
Most Scandinavian snus is made in Sweden where it is regulated as a food product under the Swedish Food Act. There is also a voluntary quality standard for snus products, the GothiaTek® standard, that sets out the maximum levels for certain constituents, including metals, nitrite, nitrosamines, agrochemicals, mycotoxins and aldehydes.[ii] There are also strict requirements for how the tobacco is grown. The tobacco used in snus is air- or sun-cured, which significantly reduces the levels of the toxicant benzo(a)pyrene.[iii]
While the manufacturing methods and ingredients have remained similar over time, the way snus is produced has become significantly more safety-focused during the 20th century. Changes introduced over the past few decades by manufacturers have resulted in substantial decreases in the levels of unwanted substances in the product.
Should smokers switch from cigarettes to snus?
Despite being used for centuries, the relative safety of snus compared to cigarettes has only very recently been confirmed by independent epidemiological and clinical investigation. But research has now shown there is little difference in health-adjusted life expectancy between smokers who quit all tobacco and smokers who switch to snus.[iv]
Snus contains lower levels of a range of toxicants found in cigarette smoke. For example, the pasteurisation process reduces the quantity of tobacco-specific nitrosamines present in snus. These chemicals are one of the primary carcinogens found in tobacco, and they have been linked with cancers of the lungs, oral cavity, oesophagus and liver from both cigarette and smokeless tobacco usage.[v]
In the United States, cigarette smoking is linked to about 80% to 90% of lung cancer deaths.[vi] But with snus use there is a negligible risk of lung cancer since there is no combustion, and exposure to tobacco constituents does not occur via inhalation through the respiratory tract.[vii] There is also no inhalation of carbon monoxide.
There is no overall association between snus use and oropharyngeal cancer (a cancer affecting the part of the throat immediately behind the mouth).[viii] In contrast, 25 out of 100 of mouth and oropharyngeal cancers in the UK are caused by smoking.[ix] Swedish snus use does not appear to be implicated in the development of pancreatic cancer in men.[x] Used as an alternative to cigarettes, snus also has the potential to reduce the incidence of cardiovascular disease.[xi]
Studies investigating a potential link between snus use and diabetes have reported little overall association. They do suggest that high consumption of snus (four or more cans per week) may be associated with a higher risk of developing diabetes, but these results are not conclusive.[xii]
In Sweden and Norway, high levels of snus use are associated with very low levels of smoking and smoking-related disease. Swedish men have switched from smoking to using snus in large numbers, with 23% of men using it daily in 2018.[xiii] Sweden has by far the lowest rate of smoking in Europe[xiv] and is the only EU state to have reached ‘smoke-free status’, classically defined as less than 5% adult smoking prevalence, in the adult population aged between 15 and 54. By comparison, the average EU smoking rate for this population is 26 per cent.[xv] Swedish men also have Europe’s lowest level of tobacco-related mortality, with 152 deaths attributable to smoking per 100,000 compared with the European average of 373 deaths per 100,000.[xvi]
Norway also has very low rates of smoking – 8% of Norwegian adults smoke daily – and increasing uptake of snus use among the young. Only 1% of women aged 16–24 smoke, while some 12% use snus daily.[xvii]
Can snus be a gateway to smoking cigarettes?
According to the gateway hypothesis, it would be predicted that among those who have not previously smoked, users of snus would be more likely than non-users to subsequently take up smoking. But a review of the evidence examining the possibility of gateway effects in Sweden suggested that snus appeared to lead users away from smoking rather than towards it.[xviii] With its status as a safer nicotine product, snus therefore not only acts as a tool to aid smoking cessation, it may also reduce the rate at which people take up smoking in the first place.
Is snus legal everywhere?
No, snus is banned in 38 countries around the world, but its regulatory status in many of them is not straightforward. So, while it is illegal to buy snus online or import the product for trade in the European Union, there is no legislation to prevent people importing it for their own personal use. These rules apply to all the countries in the EU, with the exception of Sweden, which gained a derogation (exemption) when it joined the EU in 1995. The EU legislation came in 1992, after the UK banned oral snuff in response to the launch of a brand of moist smokeless tobacco called Skoal Bandits. Unfounded fears linking the product with mouth cancer, together with concerns that Skoal Bandits was being targeted at teenagers, led to the UK ban, which was then mirrored by the EU.[xix] Snus is also banned in Australia, Bahrain, Liechtenstein, Macedonia, Montenegro, New Zealand, the Russian Federation, Turkey, Turkmenistan, the UK and Vanuatu.
How might extending the availability of snus benefit public health?
If the EU ban on snus was revoked, it is calculated that around 320,000 tobacco-related premature deaths among men aged 30 years or older could be prevented each year in the EU.[xx] A European Commission review concluded that complete substitution of smokeless tobacco products for tobacco smoking would ultimately prevent nearly all deaths from respiratory disease currently caused by smoking and reduce the cardiovascular mortality that currently arises from smoking by at least 50%.[xxi]
What have regulators and health bodies said about snus?
In its 2016 report Nicotine without smoke: Tobacco harm reduction, the UK’s Royal College of Physicians referred to the potential of snus as a safer nicotine product. It said: “The availability and use of […] snus in Sweden […] demonstrates […] that a substantial proportion of smokers will, given the availability of a socially acceptable and affordable consumer alternative offering a lower hazard to health, switch from smoked tobacco to the alternative product.”[xxii]
In October 2019, the US Federal Drug Administration (FDA) granted snus manufacturer Swedish Match the agency’s first ever modified risk tobacco product (MRTP) orders.[xxiii] The decision authorized the marketing of eight of its General Snus products alongside specific information about the lower risks of certain health effects compared to smoking cigarettes. The FDA’s summary stated: “The available scientific evidence demonstrates that exclusive use of the eight General Snus products will significantly reduce harm and the risk of tobacco‐related disease to individual tobacco users”, adding “the eight General Snus MRTPs will benefit the health of the population as a whole”. The FDA also said: “The claim ‘Using General Snus instead of cigarettes puts you at a lower risk of mouth cancer, heart disease, lung cancer, stroke, emphysema, and chronic bronchitis’ is scientifically accurate.”
For further information about the Global State of Tobacco Harm Reduction’s work, or the points raised in this GSTHR Briefing Paper, please contact [email protected]
For further information about the legal status and availability of snus around the world, visit the Global State of Tobacco Harm Reduction database. Select a country and then click on the quick link for specific national information about snus.
About us: Knowledge·Action·Change (K·A·C) promotes harm reduction as a key public health strategy grounded in human rights. The team has over forty years of experience of harm reduction work in drug use, HIV, smoking, sexual health, and prisons. K·A·C runs the Global State of Tobacco Harm Reduction (GSTHR) which maps the development of tobacco harm reduction and the use, availability and regulatory responses to safer nicotine products, as well as smoking prevalence and related mortality, in over 200 countries and regions around the world. For all publications and live data, visit https://gsthr.org
Our funding: The GSTHR project is produced with the help of a grant from the Foundation for a Smoke-Free World, a US non profit 501(c)(3), independent global organization. The project and its outputs are, under the terms of the grant agreement, editorially independent of the Foundation.
[i] Sudhanshu Patwardhan and Karl Fagerström, ‘The New Nicotine Pouch Category: A Tobacco Harm Reduction Tool?’, Nicotine & Tobacco Research 24, no. 4 (1 April 2022): 623–25, https://doi.org/10.1093/ntr/ntab198
[ii] Lars E. Rutqvist et al., ‘Swedish Snus and the GothiaTek® Standard’, Harm Reduction Journal 8, no. 1 (16 May 2011): 11, https://doi.org/10.1186/1477-7517-8-11
[iii] ‘Gothiatek Standard: B(a)P’, Swedish Match, 7 March 2016, https://www.swedishmatch.com/Snus-and-health/GOTHIATEK/GOTHIATEK-standard/BaP/
[iv] Coral E. Gartner et al., ‘Assessment of Swedish Snus for Tobacco Harm Reduction: An Epidemiological Modelling Study’, The Lancet 369, no. 9578 (16 June 2007): 2010–14, https://doi.org/10.1016/S0140-6736(07)60677-1
[v] Matt Schwarzfeld, ‘How Snus Works’, HowStuffWorks, 14 September 2010, https://science.howstuffworks.com/snus.htm
[vi] ‘What Are the Risk Factors for Lung Cancer?’, Centers for Disease Control and Prevention, 19 October 2021, https://www.cdc.gov/cancer/lung/basic_info/risk_factors.htm
[vii] Elizabeth Clarke et al., ‘Snus: A Compelling Harm Reduction Alternative to Cigarettes’, Harm Reduction Journal 16, no. 1 (27 November 2019): 62, https://doi.org/10.1186/s12954-019-0335-1
[viii] Peter N. Lee, ‘Summary of the Epidemiological Evidence Relating Snus to Health’, Regulatory Toxicology and Pharmacology: RTP 59, no. 2 (March 2011): 197–214, https://doi.org/10.1016/j.yrtph.2010.12.002
[ix] ‘Risks and Causes for Mouth Cancer’, Cancer Research UK, accessed 26 September 2022, https://www.cancerresearchuk.org/about-cancer/mouth-cancer/risks-causes
[x] Marzieh Araghi et al., ‘Use of Moist Oral Snuff (Snus) and Pancreatic Cancer: Pooled Analysis of Nine Prospective Observational Studies’, International Journal of Cancer 141, no. 4 (2017): 687–93, https://doi.org/10.1002/ijc.30773
[xi] Clarke et al., ‘Snus’. https://doi.org/10.1186/s12954-019-0335-1
[xii] Peter N. Lee and Alison J. Thornton, ‘The Relationship of Snus Use to Diabetes and Allied Conditions’, Regulatory Toxicology and Pharmacology 91 (1 December 2017): 86–92, https://doi.org/10.1016/j.yrtph.2017.10.017
[xiii] ‘Living Conditions Surveys, Tobacco Habits by Indicator, Age, Sex, Observations and Period’, Statistikdatabasen, Statistics Sweden, 2018, http://www.statistikdatabasen.scb.se/pxweb/en/ssd/START__LE__LE0101__LE0101H/LE0101H25/
[xiv] European Commission, ‘Special Eurobarometer 429: Attitudes of Europeans towards Tobacco’ (Brussels, 2015), http://data.europa.eu/88u/dataset/S2033_82_4_429_ENG
[xv] European Commission, ‘Special Eurobarometer 506: Attitudes of Europeans towards Tobacco and Electronic Cigarettes’ (Brussels: European Commission, 3 February 2021), S2240_506_ENG, http://data.europa.eu/88u/dataset/S2240_506_ENG Sweden country factsheet accessible at: https://europa.eu/eurobarometer/surveys/detail/2240
[xvi] Peter Lee and Lars M. Ramström, ‘New Data Shows Low Risk Nicotine Product Snus Is 95 Percent Safer than Smoking’, EurekAlert!, 2017, https://www.eurekalert.org/news-releases/591470 Report of data presented at the Global Forum on Nicotine 2017.
[xvii] Statistics Norway, ‘Tobacco, Alcohol and Other Drugs’, SSB, 18 January 2022, https://www.ssb.no/en/helse/helseforhold-og-levevaner/statistikk/royk-alkohol-og-andre-rusmidler
[xviii] C. Bates et al., ‘European Union Policy on Smokeless Tobacco: A Statement in Favour of Evidence Based Regulation for Public Health’, Tobacco Control 12, no. 4 (1 December 2003): 360–67, https://doi.org/10.1136/tc.12.4.360
[xix] Christopher Snowdon, The Art of Suppression: Pleasure, Panic and Prohibition Since 1800 (Ripon: Little Dice, 2011), 145–53.
[xx] Lars Ramström, Institute for Tobacco Studies, Sweden, ‘Sweden’s Pathway to Europe’s Lowest Level of Tobacco-Related Mortality’ (Global Forum on Nicotine, Warsaw, 2017). In Harry Shapiro, ‘No Fire, No Smoke: The Global State of Tobacco Harm Reduction 2018’ (London: Knowledge-Action-Change, 2018), 50, https://gsthr.org/resources/thr-reports/no-fire-nosmoke-global-state-tobacco-harm-reduction-2018/
[xxi] Scientific Committee on Emerging and Newly Identified Health Risks, ‘Health Effects of Smokeless Tobacco Products’ (Brussels: European Commission, 2008), https://ec.europa.eu/health/archive/ph_risk/committees/04_scenihr/docs/scenihr_o_013.pdf
[xxii] Royal College of Physicians, ‘Nicotine without Smoke: Tobacco Harm Reduction’, RCP Policy: Public Health and Health Inequality (Royal College of Physicians, 28 April 2016), https://www.rcplondon.ac.uk/projects/outputs/nicotine-without-smoke-tobacco-harm-reduction
[xxiii] US Food & Drug Administration, ‘FDA Grants First-Ever Modified Risk Orders to Eight Smokeless Tobacco Products’, FDA, 24 March 2020. https://www.fda.gov/news-events/press-announcements/fda-grants-first-ever-modified-risk-orders-eight-smokeless-tobacco-products