Is Sleeping on Your Left Side Better for Your Health? Here’s What to Know

with more efficient movement of certain substances through brain-fluid pathways compared with some other positions.

But here’s the important part:

This does not mean that sleeping on your left side has been proven to prevent Alzheimer’s disease or other forms of dementia.

Human evidence remains limited.

11. The Glymphatic System Is Still Being Studied
    The glymphatic system is a proposed brain waste-clearance pathway involving cerebrospinal fluid and interactions with the spaces around brain cells.

Researchers are investigating its potential relationship with:

Sleep

Aging

Neurological disease

Brain injury

Neurodegeneration

Sleep itself appears