Roundworms avoid dead worms, impacting fertility and lifespan

Roundworms exposed to dead counterparts experience altered fertility and shortened lifespans, according to new research. This suggests a biological response to the presence of death within their environment. Researchers at the University of Michigan found that roundworms, *C. elegans*, avoid dead worms and exhibit increased reproduction followed by reduced lifespans when exposed to them. This response is triggered by the detection of specific metabolites released by the deceased. The study identified two olfactory neurons in the worms that detect these death cues, AMP and histidine. This research provides insight into how organisms perceive and react to death, offering potential avenues for understanding aging.