Malnutrition Universal Screening Tool
'MUST' is a five-step screening tool to identify adults, who are malnourished, at risk of malnutrition or obese.

Mini Nutritional Assessment
MNA is a screening tool used to identify older adults (>65 years) who are malnourished or at risk of malnutrition.

Nutrition in Parkinson's Disease
Stanford University, School of Medicine webpage with links to downloadable pdfs of publications on diet and nutrition in Parkinson's Disease.

Nutritional status in older persons according to healthcare setting: A systematic review and meta-analysis of prevalence data using MNA
Journal Article. Authors Cereda E. et al. Clinical Nutrition 2016;35(6):1282. Epub 2016 Apr 6.

The Challenge of Managing Undernutrition in Older People with Frailty
Journal Article. Nutrients 2019 Apr; 11(4): 808. E-pub 2019 Apr 10. doi: 10.3390/nu11040808

What is malnutrition?
This WHO website gives an overview of malnutrition in general populations.