J. Patrick Neary

Exploring the interaction between the heart and the brain, known as the heart-brain axis, has shown how heart function changes due to a concussion. (Shutterstock)

Repeated concussions can alter heart activity and impact the ‘heart‑brain’ axis

Concussion doesn’t just affect the brain, but the whole body. The interaction of the ‘heart-brain axis’ means that as the brain works to heal its injury, it puts extra stress on the heart.
Montreal Alouettes quarterback Johnny Manziel is tackled by the Ottawa Redblacks in Ottawa on Aug. 11, 2018. Manziel was subsequently placed under the CFL concussion protocol. (THE CANADIAN PRESS/Justin Tang)

How concussion stresses the heart to protect the brain

Recent research shows that the heart is affected when the head takes a blow, in sports-related concussion.

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