What can dipping and chewing tobacco do to your body? 5 things to know
September 08, 2025
Medically Reviewed | Last reviewed by on June 25, 2025
The use of tobacco, whether by smoking or through smokeless tobacco products, is one of the most common causes of head and neck cancer.
Though the human papillomavirus (HPV) also contributes to a significant number of head and neck cancers today, data suggest that nearly a third of all oral cancer cases worldwide can still be directly attributed either to the use of smokeless tobacco products or the chewing of the betel nut, a common habit in Southeast Asia.
But what else can dipping or chewing tobacco do to your body? Is the damage reversible? And, are these activities connected to any other types of cancer?
Read on to find out.
Smokeless tobacco types
Smokeless tobacco products come in several forms. These include:
- Dip: moist, loose tobacco normally wedged between the lower lip and gum
- Snuff: finely ground tobacco that is either snorted (dry) or tucked between the cheek and gum (moist)
- Pouches: small mesh bags containing dried, moist or powdered tobacco leaves; also held between the cheek and gum
- Dissolvable: sticks, strips and lozenges that are designed to dissolve in the mouth
You might think tobacco can¡¯t hurt you if you¡¯re not inhaling the smoke generated by a lit cigar or cigarette ¡ª or the aerosols and vapors generated by a heat stick or e-cigarette. But that¡¯s not true. Tobacco causes different levels of harm to different parts of the body, no matter what form it comes in.
The problem with smokeless tobacco products
The main problem with smokeless tobacco products is that they can irritate and damage the oral mucosa, or lining of the oral cavity. That, in turn, can lead to chronic inflammation, which has been linked to both the development and spread of certain types of cancer.
But smokeless tobacco products can also cause and worsen other health problems. These include:
- Tooth decay and loss
- Xerostomia (dry mouth)
- Chronic halitosis (foul breath)
- Oral microbiome disruption
- Indigestion
- Liver and pancreas dysfunction
Even if you spit out most of the saliva generated while using these products, swallowing a certain amount of it ¡ª now infused with tobacco extract ¡ª is unavoidable. That¡¯s why, in addition to various oral cancers, which include tongue cancer, gum cancer and hard palate cancer, smokeless tobacco products have also been linked to:
The reason? All of these organs are exposed to the toxins present in tobacco whenever you dip or chew it.
Key takeaways
- Tobacco causes harm, no matter what form it comes in.
- Smokeless tobacco products can irritate the lining of the oral cavity, and either cause or worsen many other health problems.
- Determining whether the damage caused by smokeless tobacco products is temporary or permanent depends on several factors, including how long you've been using them.
Don¡¯t be deceived: Nicotine pouches are not totally safe
The tobacco industry¡¯s recent launch of nicotine pouches caught many of us by surprise. These products are made from cellulose fibers infused with nicotine. Manufacturers say they are better at delivering nicotine than tobacco. They also claim that since no tobacco leaf is present, they¡¯re not as harmful.
The problem with that assertion is that up to half the nicotine used in these products may still be derived from tobacco plants. According to the Food and Drug Administration (FDA), a product can contain as little as 50% synthetic nicotine and still be labeled as ¡°synthetic.¡±
Manufacturers say the tobacco-derived nicotine used in their products is purified or synthetic, but purifying nicotine derived from tobacco enough to reach medicinal levels is expensive. To qualify for medicinal status, as in products like the patch, lozenges or gum, nicotine has to be 99.9% pure.
That¡¯s why the FDA¡¯s pre-marketing authorization only allows nicotine pouches to be marketed as a ¡°modified risk tobacco product.¡± The manufacturers know that the tobacco-derived nicotine in their products is not pure enough to qualify for medicinal status. Otherwise, they would have applied for that designation, using the same mechanism/criteria that apply to the patch, lozenges and gum.
Now, nicotine pouch manufacturers must keep collecting data as a part of the authorization process to determine what their long-term effects are. They are likely to be less harmful than 100% tobacco-based nicotine products. But we won¡¯t know the exact level of harm for certain until we have years of accumulated data to analyze.
¡®Snus,¡¯ you lose
Another smokeless tobacco form to be aware of is ¡°snus.¡± Pronounced ¡°snoose,¡± this powdered tobacco product originally came from Sweden, where a company devised a new technology for processing tobacco plants.
Instead of harvesting the leaves and hanging them up to dry for days/weeks, they created a method of drying them out almost immediately. This eliminated the fermentation process caused by bacteria, which is responsible for 80% of the carcinogens found in dried tobacco.
The hope was that this new technology might also reduce the number of cancer diagnoses linked to smokeless tobacco. Swedish studies have determined that cancer rates were lower among snus users than they were among smokers. But the rate of pancreatic cancer among people using snus was higher than in the control group of non-tobacco product users.
Even so, the American tobacco industry tried to mimic snus by putting regular loose snuff in a pouch and calling it by the same name. That caused a lot of confusion among smokeless tobacco users. Then, the tobacco industry switched tactics. Within a year of the FDA granting the original Swedish product a ¡°modified risk¡± designation, the tobacco industry bought it out. They did the same thing a few years ago when they purchased the most popular e-cigarette maker at the time.
Damage caused by dipping and chewing may be permanent
Whenever patients ask me about how damaging smokeless tobacco is, I tell them all the same thing: it really depends. If you¡¯ve already lost teeth and underlying bone structure due to the use of smokeless tobacco products, then that is not reversible. Similarly, once your gums have receded beyond a certain point, it¡¯s impossible to bring them back up.
But if all you have right now is a little gum irritation, you might be able to fully recover if you stop dipping and chewing tobacco. There may be no long-term damage if you¡¯ve only been using smokeless tobacco products for a few weeks or months. The probability of long-term damage is much higher if you¡¯ve been using it for years and years.
But as with smoking, the body starts seeing benefits almost immediately when you stop using these products. Call 1-800-784-8669 or text QUIT to 47848 for help quitting.
Cancer patients may also enroll for free in?MD Anderson¡¯s Tobacco Research and Treatment Program. If you are not an MD Anderson patient, but would still like to particpate in one of our studies, please visit Tobacco-Related Studies.
., is medical director of the Tobacco Research and Treatment Program at MD Anderson.
or call 1-877-632-6789.
Topics
Smoking and TobaccoTobacco causes harm, no matter what form it comes in.
Maher Karam-Hage, M.D.
Physician