MNA-SF — Mini Nutritional Assessment (Short Form)
The Mini Nutritional Assessment Short Form (MNA-SF) is a validated 6-item screening tool for malnutrition risk in older adults. It is widely used in geriatric medicine, long-term care, and hospital settings to identify patients requiring nutritional intervention.
About
The Mini Nutritional Assessment (MNA) was developed by Dr. Bruno Vellas and colleagues in 1994 as a validated nutritional screening and assessment tool for older adults. The Short Form (MNA-SF) was later developed as a 6-item screening version that can be completed in 5 minutes. It covers: decline in food intake due to appetite loss, digestive problems, or chewing/swallowing difficulties (0-3 points), weight loss in the past 3 months (0-3 points), mobility (0-2 points), acute stress or psychological distress in the past 3 months (0-2 points), neuropsychological problems including dementia or depression (0-2 points), and BMI (0-3 points). Total scores range from 0-14, with 12-14 indicating normal nutritional status, 8-11 indicating at risk of malnutrition, and 0-7 indicating malnutrition. The MNA-SF has been validated in over 50 languages and in diverse settings including community-dwelling, hospitalized, and institutionalized older adults. It demonstrates sensitivity of 89-96% and specificity of 82-98% for detecting malnutrition compared to the full MNA. The MNA is the most widely used nutritional assessment tool for older adults globally and is recommended by the European Society for Clinical Nutrition and Metabolism (ESPEN), the American Society for Parenteral and Enteral Nutrition (ASPEN), and the International Association of Gerontology and Geriatrics (IAGG).
Formula
Total = Appetite/Intake Decline (0-3) + Weight Loss (0-3) + Mobility (0-2) + Acute Stress (0-2) + Neuropsych (0-2) + BMI (0-3). Max 14.
The MNA-SF total score is calculated by summing points from 6 items. Item 1 (Appetite/Intake): Has food intake declined over the past 3 months due to appetite loss, digestive problems, chewing or swallowing difficulties? (0 = severe decrease, 1 = moderate decrease, 2 = no decrease). Item 2 (Weight Loss): Weight loss in the past 3 months (0 = >3 kg, 1 = does not know, 2 = 1-3 kg, 3 = no loss). Item 3 (Mobility): How does the patient move? (0 = bed/chair bound, 1 = able to get out but does not go out, 2 = goes out independently). Item 4 (Acute Stress): Has the patient experienced acute stress or psychological distress in the past 3 months? (0 = yes, 1 = no). Item 5 (Neuropsych): Neuropsychological problems (0 = severe dementia or depression, 1 = mild dementia, 2 = no problems). Item 6 (BMI): Body Mass Index (0 = <19, 1 = 19-21, 2 = 21-23, 3 = ≥23). If BMI cannot be calculated, calf circumference can be used as an alternative. Total score interpretation: 12-14 = normal nutritional status, 8-11 = at risk of malnutrition, 0-7 = malnourished.
Score Interpretation
The MNA-SF is the most widely validated and used nutritional screening tool for older adults globally. Malnutrition in older adults is associated with increased morbidity, mortality, hospital length of stay, healthcare costs, and decreased quality of life. Early detection of malnutrition risk using MNA-SF enables timely nutritional intervention, which has been shown to improve outcomes. The MNA-SF is recommended by ESPEN, ASPEN, and IAGG guidelines for nutritional screening in all older adults. The full MNA adds a 12-item assessment component for those identified as at risk by the MNA-SF, providing a comprehensive evaluation. The MNA-SF has been validated against the full MNA with high correlation (r=0.94) and against clinical assessment of nutritional status. Malnutrition prevalence in community-dwelling older adults is estimated at 5-10%, rising to 30-50% in hospitalized and institutionalized populations.
Malnourished — 0–7
Malnourished. Urgent nutritional intervention required.
Management: Immediate referral to dietitian. Implement nutritional support plan including oral supplements or enteral feeding if needed.
At Risk of Malnutrition — 8–11
At risk of malnutrition. Nutritional intervention and monitoring recommended.
Management: Nutritional counseling, oral nutritional supplements, and weekly weight monitoring. Referral to dietitian recommended.
Normal Nutritional Status — 12–14
Normal nutritional status. No intervention needed.
Management: Continue routine monitoring. Maintain healthy diet and lifestyle.
Reference Ranges
| Population | Normal Range | Notes |
|---|---|---|
| Older adults (65+ years) | 12-14 — Normal | Normal nutritional status. No intervention required. |
| Older adults (65+ years) | 8-11 — At Risk | At risk of malnutrition. Nutritional counseling and monitoring recommended. |
| Older adults (65+ years) | 0-7 — Malnourished | Malnourished. Urgent nutritional intervention required. |
Dr. Ahmed Abdelrahman
Dr. Ahmed is a healthcare management consultant with over 15 years of experience in clinical practice and medical education.
View medical review board & editorial policy →Example Calculation
An 82-year-old male admitted to hospital with pneumonia and new functional decline. MNA-SF assessment: Food intake: moderate decrease due to illness (1 point), Weight loss: lost 4 kg over past 3 months (0 points), Mobility: bed-bound due to acute illness (0 points), Acute stress: acute illness/hospitalization (0 points), Neuropsych: no problems (2 points), BMI: 18.5 (<19, 0 points). Total MNA-SF = 1+0+0+0+2+0 = 3/14. This score indicates malnourishment (<7). Urgent referral to registered dietitian for comprehensive nutritional assessment and intervention including oral nutritional supplements or enteral nutrition is indicated.
Related Conditions
Related Medications
Common Mistakes
Using MNA-SF without the full MNA follow-up for at-risk patients
MNA-SF is a screening tool. Patients scoring 8-11 (at risk) should receive the full 18-item MNA assessment for comprehensive evaluation.
Assuming normal MNA-SF rules out all nutritional problems
MNA-SF screens for malnutrition risk, not all nutritional disorders. Patients with specific nutritional concerns (e.g., vitamin deficiencies, sarcopenia) may need additional evaluation even with normal MNA-SF.
Frequently Asked Questions
What is the difference between MNA-SF and full MNA?
How often should MNA-SF be performed?
References
- Vellas B, Villars H, Abellan G, et al. Overview of the MNA—its history and challenges. J Nutr Health Aging. 2006;10(6):456-463. PubMed
- Rubenstein LZ, Harker JO, Salvà A, et al. Screening for undernutrition in geriatric practice: developing the short-form mini-nutritional assessment (MNA-SF). J Gerontol A Biol Sci Med Sci. 2001;56(6):M366-M372. PubMed
- Kaiser MJ, Bauer JM, Ramsch C, et al. Validation of the Mini Nutritional Assessment short-form (MNA-SF): a practical tool for identification of nutritional status. J Nutr Health Aging. 2009;13(9):782-788. PubMed
- European Society for Clinical Nutrition and Metabolism (ESPEN). ESPEN guidelines on nutrition in older adults. Clin Nutr. 2018.