The heart has a ‘little brain’ — and it protects against stress

TL;DR - A Nature report describes a subset of cardiac neurons that protects the heart from malfunction during stress in mice. The finding highlights the heart’s local nervous system as a potential regulator of stress responses.

• The study focuses on neurons located within the heart.
• These neurons helped preserve cardiac function under stress.
• Evidence is from mice, so relevance to humans remains uncertain.
• The provided summary does not specify the mechanism or experimental details.