A Brain Drainage System (image) NIH/National Institute of Neurological Disorders and Stroke Share Print E-Mail Caption Brain scans of healthy volunteers showed that our brains may drain waste through lymphatic vessels, the body's sewer system. Credit Courtesy of the Reich Lab, NIH/NINDS. Usage Restrictions For educational use only. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.