People who are ageing well are much more likely have F. prausnitzii, Ni Lochlainn says, but while researchers have established that it has protective, positive qualities, they don’t fully understand how it works. If you want to encourage F. prausnitzii to live in your gut, a diet high in fibre and polyphenols (abundant in fruit and vegetables) is the best way to go.
Having a healthy gut can also help to manage some of the nutrient deficiencies that can be associated with older age, as older people are less good at absorbing vitamins from food than younger people. Studies show that healthy gut bacteria may be able to produce enough B12 for that person’s requirements, while some gut bacteria can also produce folic acid. A healthy gut microbiome may also help to prevent the risk of muscle loss and sarcopenia in old age.
Finally, some supplements may be beneficial in later life. Ni Lochlainn’s research shows that prebiotic supplements – natural compounds which encourage the growth of beneficial microorganisms – can improve cognition over a 12-week period in older adults. Ni Lochlainn’s prebiotics contain inulin, a type of dietary fibre, and fructo-oligosaccharides – sugars found in plants. Other research suggests that elderly people – especially care home residents may benefit from vitamin D supplements.
