Dysphagia (from the Greek dys-phagein: difficulty eating) is the difficulty or inability to swallow solid foods, liquids, or both. It is a symptom, not a diagnosis: it can be caused by many different conditions. The most common causes in adults: stroke (65-90% of patients experience dysphagia in the acute phase, with improvement in most but persistence in about 15% long-term), Parkinson's disease (30-80% of patients develop dysphagia over the course of the disease), ALS-Amyotrophic Lateral Sclerosis (progressive dysphagia almost invariably present), multiple sclerosis, advanced dementia, head and neck cancer (post-surgery or radiotherapy), frail elderly (presbyphagia: physiological alteration of swallowing with advancing age). Dysphagia is not just a nutritional problem: it is a safety issue. The most serious complication is aspiration pneumonia (food entering the airways): the cause of death in approximately 30% of patients with severe unmanaged dysphagia. Proper management of dysphagia is therefore a medical priority.

The IDDSI Classification: The International Standard

The International Dysphagia Diet Standardisation Initiative (IDDSI) has developed a standardized framework for describing food textures and liquid consistencies used in dysphagia management, adopted in many countries (including Italy with the contribution of Italian speech-language pathologists). The IDDSI framework has 8 levels from 0 to 7. Liquid consistency levels (0-4): Level 0 (Thin): water, coffee, clear juices. Level 1 (Slightly thick): like thick nectar. Level 2 (Mildly thick): like orange juice with pulp, very thin yogurt. Level 3 (Moderately thick): like honey. Level 4 (Extremely thick): like pudding. Solid food texture levels (3-7): Level 3 (Liquidised): completely smooth purees without lumps. Level 4 (Pureed): soft purees that hold their shape. Level 5 (Minced and moist): finely minced and moist food. Level 6 (Soft and bite-sized): soft food cut into small pieces. Level 7 (Regular): normal food. The IDDSI level prescription is made by the speech-language pathologist (SLP) after an instrumental evaluation of swallowing (videofluoroscopy or FEES: Fiberoptic Endoscopic Evaluation of Swallowing).

How to Thicken Liquids: Available Products

Liquids are often more dangerous than solids for people with dysphagia: they slip quickly down the throat, not giving swallowing time to coordinate. Thickening liquids is the most commonly used solution. Commercial thickeners based on cornstarch: Nutilis Powder (Nutricia), Thicken Up (Nestlé Health Science), Resource ThickenUp (Nestlé): added to water, coffee, juice, modifying consistency to the desired IDDSI level. They are flavorless. Advantages: easy to use, dosable. Disadvantages: can separate over time, alter the sensation in the mouth. Thickeners based on xanthan gum: Thick-It Clear (Milani Wax), SimplyThick EasyMix: more stable over time, do not separate, have a less "starchy" effect. Not suitable for infants (risk of enterocolitis). Gelatin and agar-agar: for those who prefer natural solutions, gelatin (animal-derived) or agar-agar (from seaweed: vegan) allow any liquid to be transformed into gel. Gelatin, however, melts in the mouth: not always safe for all IDDSI levels. Gelled water: water in gel form (water gelatin) is a widely used solution in Italian nursing homes to ensure safe hydration for people with dysphagia.

Preparing Safe Foods for Dysphagia: Practical Techniques

Preparing safe and appetizing meals for people with dysphagia requires attention to both texture and appearance and taste. Fundamental techniques: the immersion blender (hand blender): an indispensable tool. It allows you to blend any food into puree directly in the pot. To obtain completely smooth purees (IDDSI Level 3-4), blend for a long time and then pass through a strainer. Always add a liquid (broth, milk, cooking water, extra virgin olive oil) to achieve the correct creaminess and cohesion. Gelatin molds to maintain shape: puree poured into molds shaped like carrots, peas, chicken and solidified with gelatin or agar-agar maintains the original appearance of the food (technique used in nursing homes with 3D printing or traditional molds). It greatly improves appetite and meal dignity. Thickening sauces: sauces (ragù, tomato sauce, béchamel) are naturally denser than liquids and often safer. Enrich with oil, butter, cream, creamy cheese to increase caloric density without increasing volume (important because people with dysphagia often eat in small quantities). Watch out for "double texture" foods: foods that have both a solid and liquid part (soup with pasta, fruit with juice) are particularly dangerous because the liquid can slip before the solid is processed.

The Role of the Speech-Language Pathologist in Dysphagia Management

Dysphagia management is the responsibility of the speech-language pathologist (SLP), not the dietitian alone. The speech-language pathologist: evaluates dysphagia with clinical tests (bedside swallowing assessment) and/or instrumental evaluation (videofluoroscopy, FEES), prescribes the appropriate IDDSI level for liquids and solids, teaches compensatory swallowing maneuvers (chin tuck: lowering the chin, chin-down: flexing the head, head tilt, double swallow, effortful swallow), monitors progression and adjusts texture prescription over time, coordinates the care team (physician, nurse, dietitian, caregiver). In Italy, the speech-language pathologist is a healthcare professional with a three-year university degree (L/SNT2). Rehabilitation facilities (hospitals, nursing homes, day centers) must have speech-language pathologists on staff for dysphagia management. If your family member with dysphagia has not yet had a speech-language pathology evaluation: ask your primary care physician or neurologist explicitly. It is a healthcare right, not a special request.

Adapted Recipes for Dysphagia: Practical Examples

Salmon and potato puree (IDDSI Level 4): cook 150 g of salmon steamed and 200 g of boiled potatoes. Blend together with 2 tablespoons of extra virgin olive oil, 50 ml of whole milk, salt. Pass through a fine sieve. Pour into a mold and let set for 30 minutes in the refrigerator with a tablespoon of dissolved agar-agar. Serve at appropriate temperature. Legume cream (IDDSI Level 4): boiled chickpeas or red lentils, blended with tahini, lemon juice, extra virgin olive oil, cooking water as needed for consistency. Umami and excellent nutrition, perfectly uniform texture. Rice and parmesan pudding (Level 4, rich in protein and calcium): overcooked rice in chicken broth (1:5 ratio), blended with abundant grated parmesan, butter, pinch of nutmeg. High caloric and protein density in small volume. Fruit gelato as a snack: gelato melts in the mouth at body temperature, making it safe for many IDDSI levels (always verify with the speech-language pathologist). Excellent source of calories and appeal.

Artificial Nutrition When Dysphagia Is Severe

When dysphagia is so severe that safe and sufficient oral feeding is impossible, artificial nutrition is used. The two main options: NG tube (Nasogastric Tube): a thin tube inserted through the nose into the esophagus and stomach. Suitable for short periods (weeks-months): acute stroke phase, post-surgical recovery periods. Uncomfortable and often poorly tolerated. Not suitable long-term. PEG (Percutaneous Endoscopic Gastrostomy): a small tube inserted directly into the stomach through the abdominal wall via endoscopy. Suitable for chronic situations (ALS, advanced dementia). Allows complete nutrition with specific preparations, maintaining quality of life. The decision to proceed with PEG is complex and must involve the patient (or their legal representative), family, and the multidisciplinary medical team, taking into account the prognosis of the underlying disease and expected quality of life.