Alterations in intestinal microbiota composition are associated with several chronic conditions, including obesity and inflammatory diseases. The microbiota of older people displays greater inter-individual variation than that of younger adults. Here we show that the faecal microbiota composition from 178 elderly subjects formed groups, correlating with residence location in the community, day-hospital, rehabilitation or in long-term residential care. However, clustering of subjects by diet separated them by the same residence location and microbiota groupings. The separation of microbiota composition significantly correlated with measures of frailty, co-morbidity, nutritional status, markers of inflammation and with metabolites in faecal water. The individual microbiota of people in long-stay care was significantly less diverse than that of community dwellers. Loss of community-associated microbiota correlated with increased frailty. Collectively, the data support a relationship between diet, microbiota and health status, and indicate a role for diet-driven microbiota alterations in varying rates of health decline upon ageing.

The human intestine is colonised by 10 13 to 10 14 micro-organisms, the vast majority of which belong to the phyla Firmicutes and Bacteroidetes. Although highly stable over time, the composition and activities of the microbiota may be influenced by a number of factors including age, diet and antibiotic treatment. Although perturbations in the composition or functions of the microbiota are linked to inflammatory and metabolic disorders (e.g. inflammatory bowel diseases, irritable bowel syndrome and obesity), it is unclear at this point whether these changes are a symptom of the disease or a contributing factor. A better knowledge of the mechanisms through which changes in microbiota composition (dysbiosis) promote disease states is needed to improve our understanding of the causal relationship between the gut microbiota and disease. While evidence of the preventive and therapeutic effects of probiotic strains on diarrhoeal illness and other intestinal conditions is promising, the exact mechanisms of the beneficial effects are not fully understood. Recent studies have raised the question of whether non-viable probiotic strains can confer health benefits on the host by influencing the immune system. As the potential health effect of these non-viable bacteria depends on whether the mechanism of this effect is dependent on viability, future research needs to consider each probiotic strain on a case-by-case basis. The present review provides a comprehensive, updated overview of the human gut microbiota, the factors influencing its composition and the role of probiotics as a therapeutic modality in the treatment and prevention of diseases and/or restoration of human health.

The data indicate that the diet of Irish community-dwelling elderly individuals is sub-optimal with respect to nutrient intake, and excessive in terms of fat intake, with implications for the health status of this population group. Reductions in dietary fat and increased low fat dairy food intakes are recommended for the prevention of diet-related disease in older persons. In addition, strategies to improve a number of sub-optimal micronutrient intakes need to be developed and implemented, particularly among elderly males.

In this community-dwelling elderly Irish cohort, consumption of a high glycaemic diet is associated with poorer cognitive performance as assessed by the MMSE.

Objective To explore fetal medicine specialists’ experiences of caring for parents following a diagnosis of fatal fetal anomaly (FFA) during the implementation of termination of pregnancy (TOP) for FFA for the first time. Design Qualitative study. Setting Fetal medicine units in the Republic of Ireland. Population Ten fetal medicine specialists from five of the six fetal medicine units. Methods nvivo 12 assisted in the thematic analysis of semi‐structured in‐depth face‐to‐face interviews. Main outcome measures Fetal medicine specialists’ experiences of prenatal diagnosis and holistic management of pregnancies complicated by FFA. Results Four themes were identified: ‘not fatal enough’, ‘interactions with colleagues’, ‘supporting pregnant women’ and ‘internal conflict and emotional challenges’. Fetal medicine specialists feared getting an FFA diagnosis incorrect because of media scrutiny and criminal liability associated with the TOP for FFA legislation. Challenges with the ambiguous and ‘restrictive’ legislation were identified that ‘ostracised’ severe anomalies. Teamwork was essential to facilitate opportunities for learning and peer support; however, conflict with colleagues was experienced regarding the diagnosis of FFA, the provision of feticide and palliative care to infants born alive following TOP for FFA. Participants reported challenges implementing TOP for FFA, including the absence of institutional support and ‘stretched’ resources. Fetal medicine specialists experienced internal conflict and a psychological burden providing TOP for FFA, but did so to ‘provide full care for women’. Conclusions Our study identified challenges regarding the suitability of the Irish legislation for TOP for FFA and its rapid introduction into clinical practice. It illustrates the importance of institutional and peer support, as well as the need for supportive management, in the provision of a new service. Tweetable abstract The implementation of termination services for fatal fetal anomaly is complex and requires institutional support.