Dry Mouth and Dysphagia: The Hidden Link Affecting How We Eat and Drink

Dry Mouth and Dysphagia: The Hidden Link Affecting How We Eat and Drink

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    Article written by Rachel Sipaul, Senior Dietitian

    If you’ve ever experienced a dry mouth, you’ll know how uncomfortable it can be. For some people, particularly older adults or those living with health conditions, a dry mouth can be an ongoing concern. It can have a real impact on something we often take for granted, the ability to eat and swallow safely. 

    When dry mouth and dysphagia (swallowing difficulties) occur together, everyday eating can become challenging, and in some cases, unsafe.

    Why saliva matters more than you might think

    Saliva plays a surprisingly important role in helping us eat and drink. It moistens food, helps it bind together into a soft bolus, and makes it easier to move from the mouth to the throat. 

    It also enhances taste and provides sensory cues that help trigger a safe swallow1. 

    Without enough saliva, food can feel dry, sticky, or difficult to manage. This means chewing takes longer, swallowing requires more effort, and meals may become less enjoyable. 

    What happens when dry mouth and dysphagia overlap? 

    For people already living with swallowing difficulties, dry mouth can make the situation worse. You might notice:

    • Food feeling hard to chew or swallow 
    • Bits of food remaining in the mouth after eating 
    • Needing frequent sips of drink to help swallow
    • Avoiding certain foods altogether 

    Dry, crumbly foods such as biscuits or toast are often particularly difficult. Over time, this can lead to a more limited diet and reduced confidence at mealtimes.

    In some cases, there may also be an increased risk of choking or aspiration (food going down the wrong way)1.

    The impact on eating and nutrition 

    When eating becomes difficult or uncomfortable, it’s common for people to eat less.

    Across UK health and care settings, both dry mouth and dysphagia are linked to an increased risk of malnutrition and dehydration2. People may: 

    • Eat smaller portions 
    • Avoid certain textures 
    • Lose interest in food 
    • Experience unintended weight loss 

    This can affect overall health, energy levels, and quality of life. 

    Simple ways to support safer, more comfortable eating 

    The good news is that small changes can make a big difference.  

    1. Oral Support

    Supporting oral moisture is key, this might include

    • Regular oral care in line with NHS guidance3,4 
    • Using saliva substitutes or moisturising products such as Oralieve 
    • Moistening the mouth before meals

    These steps can help make eating more comfortable and improve swallowing. 

    2. Texture Modified Meals

    Texture is especially important when dry mouth and dysphagia are both present. 

    In the UK, the IDDSI framework is widely used to guide safe food textures5. This includes options such as: 

    • Puréed meals (Level 4)
    • Minced & moist foods (Level 5)
    • Soft and bite-sized meals (Level 6) 

    Adding the appropriate consistency sauces, gravies, or custards can also help improve moisture and make foods easier to swallow. 

    3. Mealtime Adjustments

    A few practical adjustments to the mealtime can also help:

    • Sit upright when eating 
    • Take small mouthfuls 
    • Allow plenty of time to eat 
    • Keep drinks nearby if appropriate 

    These small steps can make mealtimes feel more relaxed and manageable. 

    Support from specialist meals

    For many people, preparing suitable meals at home can be challenging. This is where specialist providers such as Wiltshire Farm Foods (wiltshirefarmfoods.com) can help. Their range of texture-modified meals is designed in line with IDDSI guidance, offering: 

    • Safe, consistent textures 
    • Balanced nutrition 
    • Familiar-looking meals, even in puréed form 
    • Convenience for individuals and carers

    Having access to ready-prepared meals can help maintain both nutritional intake and enjoyment of food. 

    Bringing it all together

    Dry mouth and dysphagia are closely linked, but this connection is often overlooked. By recognising the role saliva plays in safe swallowing, it becomes clear why managing dry mouth is so important. 

    With the right support, relief of the dry mouth and appropriate textured meals, it is possible to make eating safer, more comfortable and most importantly, enjoyable again.

    References

    1. Royal College of Speech and Language Therapists. Dysphagia Guidance. London: RCSLT; 2021.
    2. British Dietetic Association. Digest: Dysphagia and Nutrition and Hydration. Birmingham: BDA; 2023.
    3. NHS. Dry mouth (xerostomia). NHS website; 2023.
    4. Public Health England. Delivering better oral health: an evidence-based toolkit for prevention. 4th ed. London: PHE; 2021.
    5. International Dysphagia Diet Standardisation Initiative (IDDSI). Complete IDDSI Framework and Descriptors. 2019.
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