Who Is at Higher Risk of Malnutrition?
For: All
💊 Quick Take
- Some groups carry higher nutrition risk and need earlier screening.
- Risk rises with illness burden, reduced intake, and functional decline.
- Early referral can prevent avoidable deterioration.
Read the full guide below for more context.
Malnutrition risk is not limited to people who look underweight. People of any age can be at risk when illness, poor intake, repeated infections, or functional decline affect nutrition.
Common high-risk groups
- Older adults with frailty, mobility limits, or isolation
- People with chronic disease, recent hospital stay, or frequent infections
- People with swallowing, dental, oral pain, or GI symptoms
- People with restrictive eating patterns, appetite loss, or mental health burden
Child and teen high-risk groups
- Children with faltering growth or poor weight gain
- Children/teens with persistent restrictive eating or mealtime distress
- Children with chronic conditions affecting intake, digestion, or absorption
- Children with neurodevelopmental/sensory feeding challenges
Who should be screened sooner
- Adults admitted to hospital or recently discharged
- Adults in care homes or receiving intensive home support
- Adults with persistent poor appetite or unplanned weight loss
- Adults with long-term conditions affecting intake or absorption
- Children/teens with faltering growth, sustained poor intake, or repeated illness
Risk clues you or family can track
- Reduced meal frequency or unfinished meals
- Clothes, rings, or belts becoming noticeably looser
- Lower strength, slower walking, reduced confidence
- More fatigue and longer recovery after minor illness
Early action checklist
- Document appetite, intake, and weight trend for 1-2 weeks.
- Request nutrition screening if concerns persist (for adults, ask whether MUST screening is appropriate).
- Escalate promptly if intake remains very low.
- If the concern is about a child or teen, request age-appropriate pediatric assessment.
- Related reads: MUST Screening Basics, Malnutrition Basics and Red Flags, First Steps If You Are at Risk of Malnutrition.
Content Framework
BiteToBalance is a prevention-focused wellness tool for education and self-management support only, not a replacement for clinical care.
Last reviewed: 2026-02-28
Reviewer role: Clinical Content Team
Evidence level: Guideline-based
Safety Signposting
If severe decline, confusion, dehydration, or inability to eat/drink occurs, seek urgent medical care.
Red flags
- Persistent low intake with weakness
- Noticeable unplanned weight loss
- Functional decline or repeated falls
What to do next
- Arrange clinical screening and review
- Bring symptom/intake history to appointment
- Use urgent-care pathways when needed
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