New Delhi: A study has suggested a possible mechanism by which physical movement may help trigger the flow of cerebrospinal fluid in the brain, aiding in the removal of waste that can interfere with normal brain function.

Cerebrospinal fluid, a clear liquid circulating in the brain and spinal cord, plays a key role in removing waste, cushioning the central nervous system and delivering nutrients. It is part of the brain's glymphatic system.

“Our research explains how just moving around might serve as an important physiological mechanism promoting brain health,” said Patrick Drew, a professor at The Pennsylvania State University in the US.

The study, conducted in mice and published in the journal Nature Neuroscience, found that contraction of abdominal muscles during movement can push blood into the spinal cord, creating pressure that causes the brain to move slightly.

Researchers said this gentle movement may help drive the flow of cerebrospinal fluid in and around the brain, potentially assisting in waste clearance and reducing the risk of neurodegenerative disorders.

They added that even small actions, such as bracing the core before standing or taking a step, could create this effect.

The team observed that the brain shifted just before the animals moved, following contraction of abdominal muscles. Experiments applying mild abdominal pressure also caused similar brain movement.

Using computer simulations, researchers modelled how such movement could enhance fluid flow through the brain, comparing the process to squeezing a sponge to remove impurities.

While the findings offer new insights, the researchers noted that further studies are needed to determine how the mechanism applies to humans.