Meta-analysis is a statistical procedure for analyzing the combined data from different studies,
and can be a major source of concise up-to-date information. The overall conclusions of a …

Meta‐analysis has become a standard way of summarizing empirical studies in many fields,
including ecology and evolution. In ecology and evolution, meta‐analyses comparing two …

Meta‐analysis is the gold standard for synthesis in ecology and evolution. Together with
estimating overall effect magnitudes, meta‐analyses estimate differences between effect sizes …

Elevated branched-chain amino acids (BCAAs) are associated with obesity and insulin
resistance. How long-term dietary BCAAs impact late-life health and lifespan is unknown. Here, …

The gut microbiota affects a wide spectrum of host physiological traits, including development
[1–5], germline [6], immunity [7–9], nutrition [4, 10, 11], and longevity [12, 13]. Association …

“Classic” forest plots show the effect sizes from individual studies and the aggregate effect
from a meta‐analysis. However, in ecology and evolution, meta‐analyses routinely contain …

The dietary generalist–specialist distinction plays a pivotal role in theoretical and applied
ecology, conservation, invasion biology, and evolution and yet the concept remains poorly …

The early detection of pathogens with epidemic potential is of major importance to public
health. Most emerging infections result in dead-end “spillover” events in which a pathogen is …

Calorie restriction (CR) increases lifespan and improves brain health in mice. Ad libitum low-protein,
high-carbohydrate (LPHC) diets also extend lifespan, but it is not known whether …

There is a great deal of debate on the question of whether or not we know what ageing is (Ref.
Cohen et al., 2020). Here, we consider what we believe to be the especially confused and …