Ageing is associated with changes in gut microbiota composition, increased inflammation, and a greater risk of poor mental health outcomes. Nutritional inadequacies, including low dietary fibre intake and suboptimal B-vitamin status, are common in older adults and may contribute to these age-related health issues. Research suggests that increasing dietary fibre intake, particularly through prebiotics such as inulin, may help to improve gut health. In addition, B-vitamins have been linked to both gut and mental health, although their combined effects with prebiotics are not well understood.
With the assistance of a food company, the investigators have developed a functional drink enriched with chicory inulin, alone or in combination with B-vitamins. Therefore, the investigators plan to conduct a 12-week randomised, double-blind, placebo-controlled trial to test the effect of this functional drink on gut health outcomes, nutritional status, inflammation, and mental health in adults aged 50 years and older.
Community-dwelling
Non or low consumers (≤ 4 portions/week) of foods/beverages fortified with B-vitamins
Individuals with the capacity to provide informed consent
B12 injection users
Using supplements containing the nutrients of interest (B-vitamins, inulin, probiotics)
Taking medications that interfere with B-vitamin metabolism
Currently taking antibiotics
University of Ulster
Lead sponsor
ABC Nutritionals
Collaborator
Sensus B.V. (Royal Cosun), Roosendaal, The Netherlands
Collaborator
University of Leeds
Collaborator