Prebiotics have been widely researched in the context of gastrointestinal conditions and might hold potential to influence cognition outcomes by modulating the microbiota-gut-brain axis. A new randomised controlled trial in individuals aged over 60s showed that a prebiotic blend (inulin and fructo-oligosaccharides) is well tolerated and may improve cognition compared with a placebo.

Scientists have started to investigate the role gut microbiota might play in either protecting against COVID-19 or on the contrary in increasing vulnerability to severe symptomatic disease. Any conclusions would be highly relevant to preventing increased mortality among elderly nursing home residents.

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