One in three Americans doesn't get enough sleep, and 45% of the world's population doesn't, either. The US Centers for Disease Control and Prevention calls that a "public health problem," because disrupted sleep is associated with a higher risk of conditions including diabetes, stroke and cardiovascular disease.


원문출처 : http://www.cnn.com/2017/07/05/health/alzheimers-sleep-dementia-study/index.html