MICA · FIRST-LINE LEARNING NOTES
Understand, prioritise and organise follow-up
Investigate unintentional weight loss while assessing nutrition: identifying the cause does not remove its functional and nutritional consequences.
Confirm loss and its impact
Compare measured weight with dated previous values and establish duration, intentionality and fluid changes. Ask about reduced intake, early satiety, dysphagia, pain, diarrhoea, endocrine symptoms and access to food. Assess independence, strength, oral health and mental wellbeing. A high BMI can mask malnutrition; serum albumin alone does not establish that diagnosis.
[1][2]Build investigations around clinical clues
Examination should look for a mass, lymphadenopathy and gastrointestinal, respiratory or hyperthyroid features. Blood counts, kidney function, glucose, liver tests and additional investigations should follow this initial synthesis; refine testing according to age, exposures and symptoms. Weight loss with dysphagia, bleeding or a mass requires prompt targeted investigation rather than repeated blood testing alone.
[3][1]Quantify weight change over a defined period and distinguish reduced intake, feeding difficulties and increased losses or requirements. Ask about dysphagia, pain, bowel symptoms, oral health, medicines and social circumstances. Muscle and functional loss may be substantial before body weight becomes very low. Assess malnutrition and its cause in parallel.
[1][3]Address causes and intake
Arrange referral according to the clinical clues without waiting for every test. Include nutritional assessment early when intake is inadequate or consequences are significant. Inability to eat or drink, dehydration or rapid deterioration warrants urgent assessment. Following severe, prolonged restriction, refeeding requires supervised planning that accounts for refeeding risk.
[3][1]- Weight loss with dysphagia, bleeding or another concerning focal sign requires expedited assessment.
- Combine appropriate nutritional support with aetiological investigation rather than delaying intake assessment until diagnosis.
- Severe malnutrition or prolonged very low intake requires assessment for refeeding risk.
Review weight and functional trajectories
Track weight, intake, symptoms and everyday functioning; fluid retention can make weight alone misleading. Document pending results and reasons to seek reassessment. Ongoing loss despite reassuring initial tests warrants repeat examination and a considered review of organic, medication-related and psychosocial explanations.
[1][3]A learning situation
FICTIONAL CASE · SELF-REFLECTION WITHOUT A SCORE
A 58-year-old man who remains overweight has loosened his belt over several months. He eats less because swallowing is uncomfortable and has not been weighed recently. His family notices declining health.
What two objectives should guide this consultation?
Read the reasoning
Measure the loss and intake, and promptly investigate dysphagia while assessing nutritional risk. Overweight does not prevent malnutrition. Offering supplements without investigating an obstruction or other cause is insufficient; inability to maintain hydration would increase urgency.
References and scope
- Nutrition support for adults: oral nutrition support, enteral tube feeding and parenteral nutrition (CG32) ↗
- ESPEN practical guideline: Clinical nutrition and hydration in geriatrics ↗
- Suspected cancer: recognition and referral (NG12): actions by symptom and findings ↗
Original educational synthesis for adult first-line practice. International references must be interpreted with the clinical setting and local care pathways. Independent human scientific review remains to be confirmed.