Short answer: snus delivers nicotine through the gum, which is addictive and raises heart rate and blood pressure for a while after use. Research from Sweden and Norway, where snus has been used for decades, links regular use to gum recession where the pouch sits, and to a higher risk of some cancers and pregnancy complications. Other questions, like what snus does to teeth or the long-term effects of tobacco-free "white snus", are still open.
This guide is about traditional tobacco snus, the moist ground tobacco that has been used in Scandinavia for over a century. If you use tobacco-free nicotine pouches, read our separate guide: Nicotine Pouch Side Effects: What Adults Need to Know.
Contents
- What is snus, and how is it different from nicotine pouches?
- What happens in your body when you use snus?
- What does snus do to your gums and teeth?
- What do the long-term studies show?
- What researchers still don't know
- Who should not use snus
- If you already use snus: practical points
- FAQ
What is snus, and how is it different from nicotine pouches?
Snus is a moist oral tobacco product from Sweden. It's made from ground tobacco, water, salt and flavourings, and comes either loose or in small portion pouches that sit under the upper lip. Unlike chewing tobacco, it isn't chewed and you don't spit. Unlike cigarettes, nothing is burned.
Online, people often use "snus" for every under-lip product, but there are two different kinds:
| Tobacco snus | Nicotine pouches ("white snus") | |
|---|---|---|
| Contains tobacco | Yes | No, nicotine plus plant fibre |
| How long it has been studied | Decades of Nordic population studies | A few years, mostly short-term |
| Typical colour | Brown | White |
| Where it's sold | Legal to sell in Sweden; banned from sale in the rest of the EU | Sold in many EU countries, rules differ by country |
That difference in history matters. Almost everything we know about long-term effects comes from studies of tobacco snus in Sweden and Norway. That evidence can't simply be applied to tobacco-free pouches, and the reverse is true too.
What happens in your body when you use snus?
The nicotine in snus is absorbed through the lining of the mouth and reaches the bloodstream within minutes. Nicotine is a stimulant. It acts on the nervous system and gives the familiar short-term effects:
- a faster heartbeat and a temporary rise in blood pressure
- a feeling of alertness or a "buzz", especially at higher strengths or for new users
- tingling or a burning feeling where the portion sits
- for people not used to the strength: dizziness, nausea or hiccups
The biggest everyday effect is dependence. Nicotine is addictive, and regular snus users can get cravings, irritability and trouble concentrating when they go without. How much nicotine you get depends on the strength of the product and how long the portion stays in, and with stronger products it adds up quickly.
What does snus do to your gums and teeth?
The mouth is where snus has its most direct, visible effects, because the portion sits against the same patch of gum for long periods, every day.
In 2026, researchers at the University of Gothenburg published a systematic review of the studies on snus and oral health. Their main findings:
- Gum recession: there is consistent evidence that snus can make the gum pull back, especially at the spot where the portion is usually placed.
- Gum inflammation: several studies found more inflamed gums in snus users, even after taking plaque levels into account.
- Portion vs loose: the risk of recession appeared lower with portion snus than with loose snus.
- Tooth decay: the researchers could not conclude that traditional snus itself raises the risk of cavities.
- White snus: there are almost no long-term studies on tobacco-free pouches and oral health yet.
Most of these studies were observational, so they show a link rather than proving cause and effect. Habits like oral hygiene, smoking history and diet can also play a part.
Dentists also see "snus lesions": whitish, wrinkled patches on the inside of the lip where the portion sits. These are usually harmless and tend to heal once the person stops using snus or moves the portion. Any patch that doesn't go away should still be checked by a dentist. Some users also notice stained teeth, mainly with brown tobacco snus.
What do the long-term studies show?
The most thorough review of the evidence is the Norwegian Institute of Public Health (NIPH) report "Health risks from snus use" from 2019. It brings together decades of Nordic research on Swedish-type snus. Here is a summary of what it and related research report:
| Area | What the research reports | How certain |
|---|---|---|
| Nicotine dependence | Snus is addictive | Well established |
| Gums | Gum recession and inflammation at the placement site | Consistent evidence |
| Oesophageal and pancreatic cancer | Snus use probably increases the risk | Moderate |
| Stomach and rectal cancer | A possible link | Low |
| Oral, lung and colon cancer | Unclear | Uncertain |
| Heart and circulation | Linked to high blood pressure, and to a higher risk of dying after a heart attack or stroke | Moderate to low |
| Type 2 diabetes | Linked to heavy use | Moderate to low |
| Pregnancy | Linked to complications such as preterm birth and stillbirth | Moderate |
Not every review reads the evidence the same way. Some researchers argue the risks of snus are underestimated (see the commentary in the Journal of the Norwegian Medical Association). Others conclude that the evidence for some cancers and for heart disease is weaker. Both sides agree on one point: snus is not harmless, and the evidence on several outcomes is still developing.
What researchers still don't know
- Tobacco-free pouches: white snus has only been widely used for a few years. Diseases like cancer take decades to develop, so there's no long-term data yet.
- Teeth: the link between snus and tooth decay or tooth loss is still unclear.
- Stronger products: much of the older research is on standard-strength snus. Today many products are much stronger, and those haven't been studied separately.
- Young users: use is rising among young adults in several countries, and the effects of starting early are still being studied.
Who should not use snus
- Anyone under 18. Snus and nicotine products are for adults only.
- People who don't already use nicotine. There's no reason to start.
- Pregnant or breastfeeding people. Nicotine reaches the baby.
- People with heart disease or high blood pressure should talk to their doctor first.
- Children and pets must never get hold of snus. Swallowing portions can cause nicotine poisoning, so store cans out of reach.
If you already use snus: practical points
- Check the strength. Look at mg of nicotine per pouch, not just the "strong" or "extra strong" label. Labels aren't the same from brand to brand.
- Switch sides. Changing where you place the portion spreads the contact over more of the gum.
- Look at your gums. If you see recession, a patch that won't heal or soreness that lasts, see a dentist and tell them you use snus.
- Keep up dental check-ups. Your dentist can spot early changes.
- Want to cut down or stop? Your doctor, pharmacist or national quitline can help.
If you buy, check the nicotine content per pouch and the ingredients on each product page. Here are our best-selling products. Each product page lists the mg per pouch.
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FAQ
Is snus bad for your gums?
Research consistently links regular snus use to gum recession and gum inflammation, mostly where the portion is placed. A 2026 University of Gothenburg review found the risk of recession appeared lower with portion snus than with loose snus.
Does snus damage your teeth?
The evidence is unclear. The 2026 Gothenburg review could not conclude that traditional snus itself raises the risk of tooth decay. Snus can stain teeth, and gum recession can expose the tooth roots.
Does snus cause cancer?
The Norwegian Institute of Public Health concluded that Swedish snus probably increases the risk of oesophageal and pancreatic cancer. The links to oral, lung and colon cancer are uncertain, and other reviews read the evidence differently.
What's the difference between snus and white snus?
Traditional snus contains tobacco. "White snus" is a common name for tobacco-free nicotine pouches. Most long-term health research is on tobacco snus, and long-term data on white snus doesn't exist yet.
How fast does snus raise your heart rate?
Nicotine from snus starts reaching the blood within minutes and raises heart rate and blood pressure for a while after use. How strong the effect is depends on the strength of the product and how used to nicotine the person is.
Sources
- Norwegian Institute of Public Health: Health risks from snus use (2019)
- University of Gothenburg: Snus linked to gum damage, gaps in knowledge about white snus (2026)
- Tidsskriftet: Are the health risks of moist oral snuff (snus) underestimated? (2020)
This article is general information, not medical advice. If you have questions about your health, talk to your doctor or dentist. Nicotine is addictive. Snus and nicotine products are for adults (18+) who already use nicotine.
