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IntroductionRecent research on health inequalities moves beyond illustrating the importance of psychosocial factors for health to a more in-depth study of the specific psychosocial pathways involved. Social capital is a concept that captures both a buffer function of the social environment on health, as well as potential negative effects arising from social inequality and exclusion. This systematic review assesses the current evidence, and identifies gaps in knowledge, on the associations and interactions between social capital and socioeconomic inequalities in health.MethodsThrough this systematic review we identified studies on the interactions between social capital and socioeconomic inequalities in health published before July 2012.ResultsThe literature search resulted in 618 studies after removal of duplicates, of which 60 studies were eligible for analysis. Self-reported measures of health were most frequently used, together with different bonding, bridging and linking components of social capital. A large majority, 56 studies, confirmed a correlation between social capital and socioeconomic inequalities in health. Twelve studies reported that social capital might buffer negative health effects of low socioeconomic status and five studies concluded that social capital has a stronger positive effect on health for people with a lower socioeconomic status.ConclusionsThere is evidence for both a buffer effect and a dependency effect of social capital on socioeconomic inequalities in health, although the studies that assess these interactions are limited in number. More evidence is needed, as identified hypotheses have implications for community action and for action on the structural causes of social inequalities.

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The objective of this study was to explore the attitudes of older people and primary care professionals towards communication of diagnosis, prognosis and symptoms in heart failure. Forty-four interviews were conducted with people aged>60 years with heart failure (New York Heart Association III-IV) recruited from general practices in the UK. Ten focus groups were held with primary care professionals involved in heart failure management. Data were analysed thematically with the aid of the NUD*IST computer program. Participants reported problems with communication, including not being given enough information about their condition, or being given complex information that they did not understand. Many understood little about heart failure and the causes of, and ways to manage, their symptoms. Few participants had had discussions about the prognosis with any health professional, and this was confirmed in professional accounts. Difficulties with terminology were frequently reported: a diagnosis of 'heart failure' was rarely communicated to patients to avoid causing anxiety. Educational needs were identified by most primary care professionals in relation to heart failure management and specifically in relation to communication. In conclusion, communication was identified as being inadequate within primary care from both the patient and professional perspectives. These findings point to a need for an educational intervention tailored specifically to the need to improve the communication skills of primary care professionals in chronic heart failure.

Chronic obstructive pulmonary disease (COPD) is a highly prevalent condition worldwide and is associated with significant mortality. This paper gives an overview of the relevant literature regarding care needs in advanced COPD from the perspective of the patient or carer, and aims to explore the appropriateness of a palliative care approach in this group. Publications revealed that patients with COPD have a high symptom burden that impacts on quality of life and social functioning. Information provision in COPD is often lacking and the implications of diagnosis and prognosis are not routinely discussed. The impact on families and carers is considerable, many patients have significant care requirements which can affect family relationships. Although patients with COPD have regular contact with health services, access to specialist services and palliative care is poor. This paper highlights the need for increased provision for palliative care in COPD, alongside dedicated education and training for health professionals, and continued research to identify the most appropriate ways of delivering this care.

In many species, the offspring of related parents suffer reduced reproductive success, a phenomenon known as inbreeding depression. In humans, the importance of this effect has remained unclear, partly because reproduction between close relatives is both rare and frequently associated with confounding social factors. Here, using genomic inbreeding coefficients (FROH) for >1.4 million individuals, we show that FROH is significantly associated (p < 0.0005) with apparently deleterious changes in 32 out of 100 traits analysed. These changes are associated with runs of homozygosity (ROH), but not with common variant homozygosity, suggesting that genetic variants associated with inbreeding depression are predominantly rare. The effect on fertility is striking: FROH equivalent to the offspring of first cousins is associated with a 55% decrease [95% CI 44–66%] in the odds of having children. Finally, the effects of FROH are confirmed within full-sibling pairs, where the variation in FROH is independent of all environmental confounding.