Alzheimer's and Speech: How Speech Therapy Helps in Dementia

Every 21 September, World Alzheimer's Day reminds us that more than 55 million people worldwide are living with dementia. Alzheimer's disease — the most common form — is widely associated with memory loss, but its impact extends far beyond that: it gradually affects language, communication, and in later stages, the ability to swallow safely. For families caring for a loved one with dementia, understanding what is happening — and what speech therapy can do — makes a tangible difference in everyday life.

How Alzheimer's Disease Affects Language

Alzheimer's progressively damages the brain areas responsible for language. In the early stages, a person may notice word-finding difficulties (anomia), talking around a subject to avoid a forgotten word, or small errors in writing. As the disease advances, understanding complex sentences becomes harder, questions are repeated, and vocabulary shrinks noticeably. In late stages, verbal language may reduce to a handful of words or disappear entirely — though this does not mean the person has stopped perceiving emotion, warmth, or the people around them.

Is It Aphasia or Dementia-Related Language Change?

Families often ask whether their loved one has aphasia. Classic aphasia appears suddenly after a stroke or brain injury and affects language in a focal way. The language difficulties in Alzheimer's, by contrast, form part of a slow, global cognitive decline. There is also a specific syndrome called Primary Progressive Aphasia (PPA), in which language is the earliest and most affected function, often before memory problems become apparent. Distinguishing between these presentations is essential for directing the right speech-therapy approach.

The Role of the Speech Therapist in Alzheimer's Care

Assessment and ongoing monitoring

A speech therapist carries out a thorough initial evaluation covering expressive and receptive language, functional memory for communication, voice quality, and swallowing. Standardised tools such as the Montreal Cognitive Assessment (MoCA) and dedicated language batteries establish a clear baseline and allow changes to be tracked over time. Regular reviews help anticipate needs and adjust strategies before difficulties become severe.

Keeping communication alive for as long as possible

In mild to moderate Alzheimer's, the goal is not to «cure» language but to preserve functional communication. This includes word-retrieval exercises, structured conversation routines, personalised photo albums as communication aids, and Augmentative and Alternative Communication (AAC) strategies tailored to each individual. Evidence compiled in guidelines from bodies such as the American Speech-Language-Hearing Association (ASHA) supports the view that early intervention slows the loss of communicative skills and meaningfully improves quality of life.

Dysphagia in Dementia: A Silent Risk That Deserves Attention

In moderate to advanced Alzheimer's, swallowing difficulties (dysphagia) become increasingly common. A person may take much longer to start chewing, pocket food in their cheeks, cough frequently during meals, or develop recurrent chest infections caused by silent aspiration — food or liquid entering the airway without triggering a cough reflex. A speech therapist assesses swallowing safety and recommends texture modifications following the internationally validated IDDSI framework, as well as posture adjustments and mealtime strategies that significantly reduce the risk of aspiration pneumonia.

Supporting Caregivers: The Other Half of the Work

Caring for someone with Alzheimer's is emotionally exhausting, particularly when communication breaks down. A major part of speech therapy in this context is coaching family members and carers in effective communication techniques: using short, clear sentences; maintaining eye contact; allowing plenty of time for a response; avoiding corrections that cause frustration; and harnessing non-verbal communication — a smile, a gentle touch, or a familiar gesture can convey far more than words alone. These practical strategies reduce tension at home and help preserve the emotional bond between patient and carer.

When Should You Seek a Speech Therapy Assessment?

There is no need to wait until difficulties become severe. A speech therapy evaluation is recommended when a person with Alzheimer's begins struggling to find words or follow conversations, when mealtimes become slower or more stressful, when frequent choking or coughing during eating appears, or when a carer feels they can no longer communicate with their loved one. The earlier an assessment takes place, the more tools can be put in place before further decline occurs.

"Alzheimer's does not take away the need to connect with others. Speech therapy works to keep that connection alive for as long as possible."

What a Speech Therapy Session Looks Like

Every session is tailored to the stage of the disease and to each person's preserved strengths. In early stages, activities may include naming tasks, narrating personal stories, or reading aloud. In moderate stages, sessions rely more on visual materials, predictable routines, and simple AAC tools. In advanced stages, the focus shifts to ensuring safe swallowing and guiding carers with practical mealtime strategies. Session length and frequency are decided on an individual basis, always taking into account the person's attention capacity and fatigue levels.

This World Alzheimer's Day, if you have a family member in Málaga or on the Costa del Sol who has started showing changes in communication or eating, please don't wait for things to worsen. At the practice of Alba Romero Cobos, specialist speech therapist for adults in Málaga, we offer comprehensive assessments and personalised intervention plans suited to every stage of the disease. You can book an appointment through the contact form on our website or call us directly — we would be delighted to support you and your family on this journey.