A multi-center prospective study of plant-based nutritional support in adult community-based patients at risk of disease-related malnutrition.

Introduction: There is an emerging need for plant-based, vegan options for patients requiring nutritional support.

Methods: Twenty-four adults at risk of malnutrition (age: 59 years (SD 18); Sex: 18 female, 6 male; BMI: 19.0 kg/m (SD 3.3); multiple diagnoses) requiring plant-based nutritional support participated in a multi-center, prospective study of a (vegan suitable) multi-nutrient, ready-to-drink, oral nutritional supplement (ONS) [1.5 kcal/mL; 300 kcal, 12 g protein/200 mL bottle, mean prescription 275 mL/day (SD 115)] alongside dietary advice for 28 days. Compliance, anthropometry, malnutrition risk, dietary intake, appetite, acceptability, gastrointestinal (GI) tolerance, nutritional goal(s), and safety were assessed.

Results: Patients required a plant-based ONS due to personal preference/variety (33%), religious/cultural reasons (28%), veganism/reduce animal-derived consumption (17%), environmental/sustainability reasons (17%), and health reasons (5%). Compliance was 94% (SD 16). High risk of malnutrition ('MUST' score ≥ 2) reduced from 20 to 16 patients ( = 0.046). Body weight (+0.6 kg (SD 1.2),  = 0.02), BMI (+0.2 kg/m (SD 0.5),  = 0.03), total mean energy (+387 kcal/day (SD 416),  < 0.0001) and protein intake (+14 g/day (SD 39),  = 0.03), and the number of micronutrients meeting the UK reference nutrient intake (RNI) (7 vs. 14,  = 0.008) significantly increased. Appetite (Simplified Nutritional Appetite Questionnaire (SNAQ) score;  = 0.13) was maintained. Most GI symptoms were stable throughout the study ( > 0.06) with no serious adverse events related.

Discussion: This study highlights that plant-based nutrition support using a vegan-suitable plant-based ONS is highly complied with, improving the nutritional outcomes of patients at risk of malnutrition.