Sleep deficiency is associated with atrophy of the inferior parietal region of the brain, according to a study published online.

The differential expression profile of F9 embryonal carcinoma cells was studied during their differentiation into parietal endoderm after exposure to 10 −7 M retinoic acid (RA) and 10 −3 ...

These findings provide some evidence that reduced slow wave sleep (SWS) and rapid eye movement sleep (REM) may contribute to brain atrophy, thereby increasing the risk of Alzheimer disease (AD).