Loneliness depends on salivary estradiol levels in adolescent females. Fujisawa T, Nishitani S, Obara T, Shinohara K. Comparative Study 2012; 33(5): 525-529 PubMed PMID: 23090271 Keywords: Adolescent, Estradiol:blood, Female, Humans, Loneliness, Male, Psychology, Adolescent, Saliva:metabolism, Sex Characteristics, Surveys and Questionnaires, Testosterone:blood,. Citation OBJECTIVE: Loneliness is one of the psychological characteristics in adolescence, during which sex hormones are elevated. The elevation of..... Read abstract Full text PDF