Loneliness

1. "Loneliness was associated with an increased risk of death (22.8% vs 14.2%; adjusted HR, 1.45; 95% CI, 1.11-1.88)." ( Arch Intern Med. 2012;172(14):1078-1084. doi:10.1001/archinternmed.2012.1993, 8/10/12)
2. "Loneliness was a significant predictor of sleep fragmentation. Humans' social nature may partly be manifest through our dependence on feeling secure in our social environment to sleep well."