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Printed on 7/20/2026
For informational purposes only. This is not medical advice.
The full Mini Nutritional Assessment (MNA) is a validated geriatric nutrition instrument combining screening and detailed assessment sections to generate a total score from 0 to 30. It helps detect malnutrition and pre-malnutrition risk early, supporting targeted nutrition interventions, functional preservation, and improved outcomes in older adults.
Formula: MNA Full total = screening subtotal (0-14) + assessment subtotal (0-16), range 0-30.
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Administer the six screening items covering mobility, weight loss in the past 3 months, acute illness or psychological stress, neuropsychological problems (dementia or depression), BMI (or calf circumference if BMI is unavailable), and living independently vs. in a care facility. The maximum screening subtotal is 14 points. If the screening score is 12 or above, the patient is at low nutritional risk—proceed to the assessment section for a complete picture regardless.
The assessment section covers dietary habits (number of meals, protein and fruit/vegetable intake, fluid intake, feeding mode), mobility and clinical status, anthropometry (mid-arm circumference and calf circumference), and self-assessment items (self-perceived health and nutrition). The maximum assessment subtotal is 16 points. Combined with the screening subtotal, the total MNA Full score ranges from 0 to 30.
Interpret the total score: 24–30 = normal nutritional status (no intervention needed beyond routine monitoring); 17–23.5 = at risk of malnutrition (dietitian referral, dietary supplementation, and monitoring every 3 months); below 17 = malnutrition (immediate nutrition intervention, supplemental feeding, investigation of reversible causes such as dysphagia, polypharmacy, or depression, and reassessment within 4–6 weeks).
Hospitalists, nurses, dietitians
Malnutrition affects 20–50% of hospitalized older adults and is associated with longer length of stay, higher complication rates, and increased 30-day readmission. Administering MNA Full at admission identifies at-risk and malnourished patients who benefit from early dietitian involvement, oral supplementation, and targeted feeding support. Pair MNA findings with serum albumin and pre-albumin when available to strengthen nutritional risk characterization. Early identification and intervention meaningfully improves clinical outcomes in this population.
Nursing home physicians, geriatric nurses, dietitians
Guidelines from major geriatric societies recommend quarterly nutritional screening for nursing home residents. MNA Full provides the structured assessment framework required to detect subclinical nutritional decline before it manifests as weight loss, functional deterioration, or pressure injuries. Documenting serial MNA scores in the resident's chart creates an auditable trajectory that supports care plan updates, justifies nutritional supplementation in insurance and funding applications, and provides a baseline for comparison after acute illness episodes.
Rehabilitation medicine teams, physiotherapists, occupational therapists
Nutritional status is a key determinant of rehabilitation success—malnourished patients have blunted muscle protein synthesis, impaired wound healing, and reduced energy for therapy participation. MNA Full at rehabilitation admission and discharge documents nutritional trajectory and allows the team to identify patients who are not gaining weight despite adequate calories, potentially pointing to occult illness, medication side effects, or psychosocial barriers. Coupling nutrition optimization with rehabilitation exercise produces better functional recovery outcomes than either intervention alone.
Geriatricians, nurse practitioners, primary care physicians
Community-dwelling older adults with multiple comorbidities, recent hospitalization, social isolation, or cognitive decline are at elevated nutritional risk. MNA Full in the outpatient geriatric clinic provides a standardized nutritional status record across visits, enabling clinicians to detect gradual decline that might be missed by weight alone. It is particularly valuable in patients taking multiple medications, those with chronic pain or depression affecting appetite, and those with swallowing difficulties who report eating less but do not volunteer this information during a standard history.
Surgeons, anesthesiologists, perioperative care teams
Malnutrition is an independent predictor of post-operative morbidity, mortality, anastomotic leak, impaired wound healing, and prolonged intensive care stay. MNA Full before elective major surgery—particularly colorectal, orthopedic, and oncologic procedures in older adults—quantifies nutritional risk and triggers pre-operative nutritional optimization. Guidelines from ESPEN and the American College of Surgeons recommend nutritional assessment and intervention in malnourished surgical candidates to reduce peri-operative complications. Even 7–14 days of pre-operative oral protein supplementation can improve outcomes in patients with MNA scores below 17.
Clinical researchers, epidemiologists
MNA Full is among the most widely cited nutritional assessment tools in geriatric research, with validation data spanning nursing homes, hospitals, and community cohorts across dozens of countries. As a primary or secondary outcome measure, it allows cross-study comparison and pooled meta-analysis. Researchers use MNA scores to stratify cohorts by nutritional risk at baseline, to measure the impact of nutritional interventions in RCTs, and to explore the relationship between nutritional status and endpoints such as falls, cognitive decline, hospital readmission, and mortality.
Always complete both the screening AND assessment sections for the full MNA—the short form (MNA-SF) uses only screening items and may miss subtle at-risk cases that score 12–14 on the screening section but have dietary and anthropometric deficits revealed by the assessment items.
If BMI is unavailable (e.g., the patient is unable to stand or has limb edema making height/weight unreliable), substitute calf circumference: below 31 cm scores 0 points; 31 cm or above scores 3 points. This validated substitution maintains scoring accuracy.
For the weight loss item, use objective documented weights rather than patient self-report whenever possible—patients with cognitive impairment often cannot accurately recall their prior weight, and self-reported weight loss is unreliable in this population.
Reassess at 3-month intervals in nursing home residents and at each inpatient admission and discharge—a declining MNA trajectory across assessments is as clinically meaningful as the absolute score, even if the patient remains in the 'at risk' band.
A score in the 17–23.5 at-risk range warrants the same urgency of dietitian referral as a score below 17—do not use 'at risk' as a reason for watchful waiting. Early intervention in the at-risk band prevents progression to overt malnutrition.
Pair MNA Full with serum albumin and prealbumin when available. Hypoalbuminemia below 35 g/L often co-occurs with MNA malnutrition categories but is an independent prognostic marker. Albumin can be falsely elevated in dehydration and depressed in acute inflammation—interpret together.
The neuropsychological item (depression or dementia) is often the highest-yield flag in geriatric outpatients—any mild cognitive impairment or depressive symptoms score 1 point (moderate-severe score 0). If this item scores low, pursue a mood and cognitive screen simultaneously with nutritional intervention.
For patients with moderate-to-severe dementia who cannot self-report, use caregiver proxy responses for subjective items (food intake changes, self-perceived health). Document the informant source in the clinical record to maintain scoring integrity for longitudinal comparison.
The MNA was developed by Vellas and Guigoz and has been validated in hundreds of studies across nursing homes, hospitals, and community settings in over 30 countries. Sensitivity approximately 96% and specificity approximately 98% against comprehensive nutritional assessment as the reference standard. Endorsed by ESPEN, the American Geriatrics Society, and the IANA. The standard cutoffs—24–30 normal, 17–23.5 at risk, below 17 malnourished—have been consistent across validation cohorts.
Lower MNA totals indicate greater nutritional vulnerability and need for active nutrition-focused care planning.
Use for older adults in outpatient geriatrics, hospital intake, rehabilitation, and long-term-care follow-up when comprehensive nutrition screening is needed.
Scores may be influenced by acute illness and reporting quality; interpretation should include clinical context and objective nutrition data.
For related assessments, see MNA-SF, MUST Score and Protein Intake.
Disclaimer: This tool is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your health.
April 21, 2026 · trust-baseline
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