National Institute of Child Health and Human Development)(NICHD)的安全睡眠運動(英语:SafetoSleep)也認為仰睡是最理想的方式。在許多國家建議嬰兒仰睡後,嬰兒猝死症發生率已顯著下降。仰睡似乎不會增加窒息的風險,即使是胃食道逆流的嬰兒也是
(英文)Taibi DM et al. 'A systematic review of valerian as a sleep aid: safe but not effective.' Sleep Med Rev. 2007;11:209-30. ncbi.nlm.nih.gov Peter J. Houghton