What Your Tongue Knows About Your Future: Tongue Pressure, Swallowing and the Longevity Plan

At a routine dental appointment, people expect me to look at their teeth and gums. They do not always expect me to ask how swallowing feels, or to check how strongly the tongue presses against the roof of the mouth.

Yet the tongue is not merely an organ of taste and speech. It is made of skeletal muscle, and like other muscles, its strength and function can change with age, illness and disuse. That makes tongue pressure a useful part of a broader conversation about oral function and healthy ageing.

In my earlier writing on oral frailty, I introduced the idea that changes in the mouth can sometimes accompany changes elsewhere in the body. This instalment adds a specific measure: tongue pressure. It is not a crystal ball, and it cannot diagnose sarcopenia or predict someone’s future on its own. But it may offer a helpful signal worth paying attention to.

What do we mean by tongue pressure?

Tongue pressure describes how much force the tongue can apply. In a clinical assessment, a small measuring device with a disposable probe is positioned in the mouth. The person presses the tongue upwards against the palate, and the device records the pressure, usually in kilopascals (kPa).

The process is brief and non-invasive. It does not involve needles or an uncomfortable procedure. Some protocols take several readings and use an average, so that one unusually high or low effort does not carry too much weight.

A number needs context. Age, health, comfort, technique and the device used can all matter. A single reading is not a diagnosis; it is one piece of information to interpret alongside symptoms and other assessments.

The link with muscle strength, sarcopenia and frailty

Sarcopenia refers to a loss of muscle strength and muscle mass associated with ageing and other factors. The tongue, being skeletal muscle, is part of that wider picture. A change in tongue function does not prove that a person has sarcopenia, but research suggests the measurement may help identify people who merit a closer look.

A 2026 Journal of Oral Rehabilitation study by Tozawa and colleagues at Kagoshima University assessed 327 dental outpatients aged 50 and above using 11 oral-function tests. Among the tests, tongue pressure showed the strongest association with both sarcopenia and frailty. In adjusted analyses, tongue pressure remained significantly associated with sarcopenia with and without BMI adjustment, and with frailty in the model that did not adjust for BMI. The researchers calculated cut-offs of about 28.5 kPa for sarcopenia and 26.9 kPa for frailty. Close to the Japanese Society of Gerodontology’s 30 kPa reference for reduced tongue pressure. Read the study.

Those findings need careful interpretation. The study was cross-sectional: it looked at people at one point in time. It cannot show that lower tongue pressure causes sarcopenia or frailty, or that it predicts what will happen later. Its cut-offs also do not turn a tongue-pressure test into a stand-alone diagnostic tool.

One recent cross-sectional analysis of community-dwelling older adults reported about a two-and-a-half-fold increase in the odds of sarcopenia among people with reduced tongue pressure. Again, that is an association, not proof of cause and effect. See the 2025 analysis.

Why take an interest, then? Because a simple oral measure may prompt a useful conversation. If a result is low, a clinician can consider whether further assessment of strength, mobility, swallowing or general health is appropriate. It is a signal, not a label.

Swallowing matters for independence

Swallowing is a complex, coordinated action involving the tongue, throat and other structures. The tongue helps move food and liquid towards the back of the mouth and contributes to forming and controlling what is swallowed. If this process becomes difficult, everyday routines may become stressful or unsafe.

Persistent coughing or choking during meals, a sensation that food is sticking, or a wet-sounding voice after swallowing are reasons to seek assessment. Swallowing difficulties can increase the risk of food or liquid entering the airway, which may lead to serious complications, including aspiration pneumonia. These symptoms deserve attention; they should not be dismissed as an inevitable part of ageing.

A questionnaire can help identify concerns, but it cannot replace clinical assessment. In Japan’s formal oral-hypofunction framework, swallowing is one of seven oral-function domains, alongside tongue pressure, tongue–lip movement, oral dryness, oral cleanliness, biting force and masticatory function. The framework uses the EAT-10 questionnaire as one way to screen for swallowing problems. A score can guide follow-up, but it is not a diagnosis by itself.

Singapore is beginning to bring oral function into routine care

Singapore is also giving oral frailty more attention. At its opening in November 2025, Serangoon Polyclinic became the first NHG polyclinic to incorporate oral-frailty care into its management of older patients. The screening approach covers areas including tooth count, chewing, swallowing, dry mouth and speech. Read the Ministry of Health’s announcement.

This is a welcome shift: oral function belongs in conversations about wider health, not just dental treatment. At the same time, screening needs to be proportionate. Questionnaires are useful, but they may not capture the whole picture.

A 2026 study of the Oral Frailty Index-8 in Singapore community adults found moderate reliability but limited structural validity. In plain English, the questionnaire showed some consistency, but its ability to represent the underlying concept fully needs further work. Read the study. This is one reason objective measures, such as a tongue-pressure test, may add useful information alongside questions about symptoms and daily function.

What I do chairside, and what you can ask

In a dental consultation, I begin with the person, not a score. I ask whether swallowing has changed, whether food or liquid causes coughing, and whether there has been a noticeable change in speech or oral movement. If symptoms or examination findings suggest a concern, I explain what further assessment may be appropriate.

A dental surgeon can assess oral structures and function, but swallowing concerns may also call for input from other appropriately qualified clinicians, including speech and swallowing therapists. Depending on the situation, a medical assessment may be needed too. Choose the right pathway for the person in front of you; do not assume every problem can be answered by a single test in a dental chair.

If you are seeing a dentist or clinician, ask:

• “Can we assess my tongue pressure or other aspects of oral function?”

• “What does this result mean in my circumstances?”

• “Could my swallowing symptoms benefit from a specialist assessment?”

• “If the measurement is repeated, how will we compare the results fairly?”

If you are searching for a dental clinic in Singapore, look for a team that is willing to explain its assessment and refer you on when needed. Whether you describe your approach as holistic or seek a biological dentist in Singapore, ask how oral findings fit into the wider clinical picture. The label matters less than clear reasoning and appropriate care.

Can tongue strength be trained?

There is encouraging, but still emerging, evidence that structured tongue-resistance or strengthening exercises can improve tongue strength and some aspects of swallowing in older adults, including frail older adults. Randomised trials have reported improvements in selected measures after supervised programmes. These studies do not mean that every person should begin tongue exercises independently, or that training will resolve every swallowing problem.

Muscle is trainable at many ages; the tongue is no exception. But the right exercise, intensity and monitoring depend on the individual. If you have difficulty swallowing, pain, neurological or medical conditions, or a history of choking, seek proper assessment before attempting a training routine. Ask a qualified clinician whether a supervised programme is suitable, and how progress should be reviewed.

For me, this is the longevity connection: a serious plan for maintaining function can include grip strength, gait speed, balance and oral function. Tongue pressure does not replace those measures. It adds another small window into how the body is working.

Keep the perspective balanced. A measurement is not a forecast, and a lower result is not a verdict. Notice changes, raise them early and ask for a proper assessment. That is a more useful plan than trying to interpret one number alone.

This article is for general information only and is not medical advice; please consult an appropriately qualified clinician about your individual symptoms or care.