Social interactions help group-living organisms cope with socio-environmental challenges
and are central to survival and reproductive success. Recent research has shown that social …

Ageing is associated with profound changes in behaviour that could influence exposure and
susceptibility to infectious disease. As well as determining emergent patterns of infection …

Accumulating evidence in humans and other mammals suggests older individuals tend to
have smaller social networks. Uncovering the cause of these declines can inform how …

Senescence—the decline in age‐specific contribution to fitness with increasing age—has
been widely investigated in evolutionary ecology. A tremendous amount of detailed …

DNA methylation‐based biomarkers of ageing (epigenetic clocks) promise to lead to new
insights into evolutionary biology of ageing. Relatively little is known about how the natural …

How a host's microbiome changes over its lifespan can influence development and ageing.
As these temporal patterns have only been described in detail for a handful of hosts, an …

The age of individuals has consequences not only for their fitness and behaviour but also for
the functioning of the groups they form. Because social behaviour often changes with age …

Our understanding of the deterioration in immune function in old age—immunosenescence—
derives principally from studies of modern human populations and laboratory animals. The …

Objective We aim to explain why salivary lactoferrin (Lf) levels are reduced in patients
suffering mild cognitive impairment (MCI) and sporadic Alzheimer's disease (sAD). 1 We …

Ageing refers to the loss of organismal functionality with age, a process that is characterised
by decreased reproduction and survival probability. In natural populations, it is expected that …