Drinking from a straw is neither categorically good nor bad. It offers real, documented benefits for dental health and is an essential assistive device for people with certain disabilities or swallowing disorders. At the same time, straws can increase swallowed air, and the material your straw is made from introduces its own set of concerns, from microplastics in plastic straws to unexpected chemical contaminants in paper and bamboo alternatives. The honest answer depends on what you’re drinking, what the straw is made of, and your individual health situation.
How Straws Protect Your Teeth
The strongest evidence in favor of straw use involves dental erosion. Acidic drinks like soda, fruit juice, and sports beverages weaken enamel when they wash across your teeth. A videofluoroscopic study comparing straw and cup drinking found that when participants used a straw positioned toward the back of the mouth, fluid contact with the front teeth dropped significantly, and contact time with all teeth was reduced. Fourteen of the patients in the study managed to avoid fluid contact with both their incisors and molars entirely when using a straw.1PubMed. A videofluoroscopic comparison of straw and cup drinking: the potential influence on dental erosion
There is a practical catch here. The protective effect depends heavily on where you place the straw. If you position it between your front teeth and let fluid pool in your mouth before swallowing, you are not getting much benefit over sipping from a cup. The straw needs to go past the front teeth, ideally toward the back of the mouth, and you should swallow fairly promptly. For people who frequently drink acidic beverages throughout the day, this is a legitimate strategy to reduce enamel erosion, but only if you’re deliberate about straw placement.
The Dry Socket Myth
If you’ve ever had a wisdom tooth pulled, you’ve probably been told to avoid straws for days afterward. The standard advice is that the suction could dislodge the blood clot forming in the extraction socket, causing a painful complication called dry socket. This belief is widespread among patients and dental professionals alike, but the evidence behind it is surprisingly thin.
A review published in the Texas Dental Journal argued that dry socket is primarily a biological process driven by inflammation and impaired healing, not a mechanical event where suction yanks out a clot.2PubMed. Straws do not cause dry sockets when third molars are extracted Risk factors like smoking, oral contraceptive use, and a history of dry socket matter far more than whether you sip through a straw. That said, most oral surgeons still give the “no straws” instruction out of caution, and there is no large controlled trial definitively settling the question either way. If your surgeon tells you to avoid straws, there’s little harm in following the advice. Just know the fear is more tradition than firmly established science.
Bloating and Swallowed Air
One clear downside of straw drinking is the extra air it introduces into your digestive system. When you suck on a straw, you inevitably pull in some air along with your beverage. For most people, this causes nothing more than a bit of extra burping. But for those prone to bloating, irritable bowel symptoms, or a condition called aerophagia (chronic air swallowing), straws can make things measurably worse.
An observational study of children with aerophagia found that treatment involved educating families about air-swallowing behaviors and specifically recommending that the children stop using straws and drinking carbonated beverages.3PubMed. Observational study of children with aerophagia Carbonated drinks plus a straw is about the worst combination for this issue, since the carbonation itself adds gas and the straw adds air on top of it. If you regularly deal with uncomfortable bloating or abdominal distension, ditching the straw is a simple intervention worth trying, especially with fizzy drinks.
When Straws Are a Medical Necessity
For a sizable group of people, straws are not a lifestyle preference but a medical tool. People with conditions affecting motor control, neck mobility, or swallowing function often depend on straws to drink safely and independently. Plastic straw bans that have swept through restaurants and municipalities sometimes overlook this, creating real access problems. A paper in the International Journal of Speech-Language Pathology made the case bluntly: plastic straws are an assistive technology critical for the social inclusion of people with disability.4PubMed. Going thirsty for the turtles: Plastic straw bans, people with swallowing disability, and Sustainable Development Goal 14, Life Below Water
The alternatives people suggest, like metal, paper, or silicone straws, do not work for everyone. Metal straws are rigid and dangerous for someone with involuntary movements or poor head control. Paper straws collapse quickly and change the taste of beverages. Silicone straws are harder to bite down on for people who need bite resistance to trigger a swallow. Flexible plastic straws remain the most functional option for many people with swallowing disabilities, and bans that fail to account for this create real hardship.
Research on post-stroke patients with swallowing difficulties found a somewhat mixed picture. In some patients, straw drinking actually produced better swallowing function scores than cup drinking, particularly among those who showed signs of aspiration with both methods. However, a subset of patients experienced aspiration only when using a straw, not with a cup.5PubMed. Comparison of straw and cup for liquid swallowing in poststroke patients This underlines that straw use in people with dysphagia should be individualized, ideally guided by a speech-language pathologist, rather than treated as universally helpful or harmful.
On a related note, straw drinking tends to produce smaller sip sizes than cup drinking. A study of patients with oropharyngeal dysphagia symptoms found that the average bolus was about 14 mL with a straw compared to about 17 mL with a cup.6PubMed Central. Straw vs Cup Use in Patients with Symptoms of Oropharyngeal Dysphagia For people at risk of aspiration, smaller sips can be an advantage. For someone simply trying to stay hydrated, the slower pace could work against them.
Chemical Contaminants Lurking in Your Straw
Here is where things get uncomfortable for anyone who assumed that switching from plastic to paper or bamboo straws was an unambiguous win. Multiple studies have found that paper and plant-based straws frequently contain PFAS, the family of persistent synthetic chemicals often called “forever chemicals” because they do not break down in the environment or the human body.
A study analyzing 43 brands of straws found that while the plastic straws tested had no measurable PFAS, 21 different PFAS compounds showed up in paper and plant-based straws. The most commonly detected were PFBA, PFOA, and PFHxA. Total PFAS concentrations ranged widely across brands. A follow-up leaching experiment found that roughly two-thirds of the extractable PFAS migrated out of the straw and into the liquid, with warmer temperatures increasing the amount released.7PubMed. The last straw: Characterization of per- and polyfluoroalkyl substances in commercially-available plant-based drinking straws
A separate study covering straws from multiple continents largely confirmed these results. PFAS were detected in almost every type of straw material tested, with one exception: stainless steel. Paper and bamboo straws had the highest detection rates. The researchers noted that plant-based straws marketed as biodegradable are not fully biodegradable if they contain persistent synthetic chemicals.8PubMed. Assessment of poly- and perfluoroalkyl substances (PFAS) in commercially available drinking straws using targeted and suspect screening approaches
Plastic straws have their own chemical concern. Although they tend to be free of PFAS, they can shed micro- and nanoparticles directly into your drink, especially when exposed to acidic beverages like cola or citrus juices. These fragments are small enough to be ingested and potentially inhaled during the sipping motion.9Journal of Hazardous Materials Advances. Sustainable management of drinking plastic straws is required to reduce plastic pollution: Are we using them more during COVID-19? The health effects of chronic microplastic ingestion are still being studied, but the direction of the evidence is not reassuring.
This creates an awkward situation. Paper and bamboo straws may expose you to PFAS. Plastic straws shed microplastics. Stainless steel straws appear to be the cleanest option from a chemical standpoint, but they carry physical risks discussed below. Glass straws share some of those physical risks. Silicone straws fall somewhere in between, with limited data on long-term chemical leaching. There is no perfectly clean option for every situation, but being aware of these trade-offs lets you make a more informed choice.
The Injury Problem with Rigid Straws
Reusable straws made of metal, glass, and hard bamboo are marketed as the sustainable option, but they introduce a hazard that flexible plastic straws never posed: they do not bend or break on impact. An analysis of straw-related emergency department visits found that injuries most commonly affected the mouth (about 45% of cases), eyes (about 22%), and internal structures (roughly 14%). Lacerations and oral injuries were significantly more common with reusable straw materials than with disposable ones.10PubMed. The Last Straw: Trends in Straw-Related Emergency Department Visits
Case reports illustrate how serious these injuries can get. One documented a child who fell while drinking from a metal straw and sustained a traumatic carotid artery injury, collapsing shortly after the fall with profuse bleeding from the mouth.11Trauma Case Reports. Traumatic carotid artery injury caused by a metal sipping straw in a pediatric patient: Anesthetic management and considerations Another case reported a skull base fracture involving the ethmoid bone and cribriform plate from a ground-level fall onto a metal straw, with trace air inside the skull as a result.12Otolaryngology Case Reports. Skull base fracture from penetrating trauma by a metal straw: A case report
These are rare events, and context matters. A stationary adult sipping iced coffee at a desk faces essentially zero risk. But children, elderly adults, anyone drinking while walking or in a moving vehicle, and people with balance or coordination issues face genuinely elevated danger from rigid straws. If you use a metal or glass straw at home, common sense goes a long way: stay seated, don’t walk around with it, and keep them away from small children who might fall.
Do Straws Give You Wrinkles?
This claim has become a staple of skincare content online: repeated straw use causes wrinkles around the mouth, similar to the “smoker’s lines” associated with long-term cigarette use. The reasoning sounds plausible. Puckering your lips to sip through a straw engages the orbicularis oris muscle in a way that drinking from a cup does not, and repeated muscle contractions are known to deepen creases over time.
The trouble is that there’s no published study directly measuring whether straw use accelerates perioral wrinkling. The comparison to smoking involves a behavior repeated dozens of times a day, year after year, combined with the direct skin-damaging effects of tobacco smoke and nicotine-related vasoconstriction. Most people use a straw a few times a day at most. Whether that level of repetitive puckering is enough to produce visible lines over decades has simply not been tested. It’s biologically plausible but unproven, and people who worry about this are making a judgment call based on extrapolation rather than evidence. If wrinkle prevention is a genuine concern, sun protection and avoiding smoking will do far more for the skin around your mouth than quitting straws.
How Your Straw Changes the Way a Drink Tastes
Straw material is not a neutral variable when it comes to flavor. A study had 134 participants taste the same unsweetened cold black tea through five different straw materials: plastic, paper, copper, stainless steel, and silicone. The tea was rated differently across materials for flavor liking, mouthfeel, and perceived sourness. Tea consumed through silicone straws was rated as more sour than tea consumed through copper straws. Female participants liked their tea significantly more when using copper or stainless steel straws compared to paper, while male participants showed no material-driven preference differences.13Food Quality and Preference. A sip of joy: Straw materials can influence emotional responses to, and sensory attributes of cold tea
Paper straws scored consistently lower on liking. Anyone who has watched a paper straw slowly disintegrate in an iced drink and tasted that cardboard undertone will not find this surprising. Metal straws, by contrast, stay temperature-neutral and do not impart flavor, which may explain the higher liking scores. If you find that a drink “tastes off” through a particular straw, the straw itself could be part of the problem.
The Environmental Picture Is Muddier Than You Think
The push away from plastic straws was driven by concern about ocean pollution, and that concern is legitimate. Plastic straws are among the most common items found in coastal cleanups. But the assumption that paper or bioplastic straws are straightforwardly better for the planet does not hold up under closer scrutiny.
A life cycle assessment comparing disposable straw materials in the United States found that replacing conventional plastic straws with bioplastic (PLA) or paper alternatives would come with environmental costs in other categories, even with increasing rates of marine litter factored in. The sensitivity analysis showed that the overall environmental impact did not improve much as the marine litter rate increased, meaning the trade-off is real and not trivially resolved by switching materials.14Science of The Total Environment. Life cycle assessment of environmental impact of disposable drinking straws: A trade-off analysis with marine litter in the United States
Paper straws require more water and energy to produce, and if they contain PFAS (as the studies above found they often do), they are not fully compostable despite being marketed that way. Bioplastic straws need industrial composting facilities that most communities lack, so they end up in landfills where they behave much like conventional plastic. Stainless steel and glass straws have a much higher production footprint but can be reused for years, which amortizes the environmental cost over time if you actually stick with them. The single most effective option for reducing environmental impact is skipping the straw entirely when you can. For the many situations where a straw is preferred or needed, a reusable stainless steel straw cleaned regularly is likely the best compromise between chemical safety, physical safety (for adults in low-risk settings), and long-term environmental cost.
Drinking Speed and How Much You Consume
One less-discussed consideration is how straw design affects the rate at which you drink. A study comparing drinking speeds across three straw types found that wide-bore straws were the fastest, followed by standard narrow-bore straws, with specialized valved straws being the slowest.15International Journal of Evidence-Based Healthcare. Drinking speed using a Pat Saunders valved straw, wide-bore straw and a narrow-bore straw in a normal adult population This matters in a few contexts. If you’re drinking a sugary or acidic beverage, faster consumption means a shorter exposure window for your teeth but a bigger sugar hit for your metabolism in one burst. If you’re managing fluid intake for medical reasons, a narrow-bore straw or a valved straw offers more natural pacing.
The wide-bore straws increasingly popular at bubble tea shops and smoothie bars let you consume large volumes quickly, which may contribute to taking in more calories than you realize in a single sitting. On the other hand, if you struggle to drink enough water throughout the day, many people report anecdotally that having a straw in a water bottle encourages them to sip more frequently. The mechanism of drinking changes your behavior in subtle ways, even if the total fluid is the same.