In honey bee colonies, a single queen is laying eggs from which thousands of worker bees are born. At a young age, workers care for the brood, then build and defend the nest and eventually, towards the end of their lives, leave the safety of the nest to forage for food. This major step in their lives is speeding up ageing because searching the environment for food exposes these foragers to a wide range of stressors, such as pathogens, predators and adverse weather conditions.