Investigation of second to fourth finger length ratio (2D:4D) in patients with bipolar disorder.

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Kɪlɪç F., Işɪk Ü., Demirdaş A., İnci H.

Revista brasileira de psiquiatria (Sao Paulo, Brazil : 1999), vol.42, pp.617-620, 2020 (Peer-Reviewed Journal) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 42
  • Publication Date: 2020
  • Doi Number: 10.1590/1516-4446-2019-0836
  • Journal Name: Revista brasileira de psiquiatria (Sao Paulo, Brazil : 1999)
  • Journal Indexes: Science Citation Index Expanded, Social Sciences Citation Index, Scopus, Academic Search Premier, Fuente Academica Plus, BIOSIS, EMBASE, MEDLINE, Psycinfo, Directory of Open Access Journals
  • Page Numbers: pp.617-620
  • Keywords: Bipolar disorder, digit ratio, 2D:4D, prenatal androgens, DIGIT RATIO, TESTOSTERONE LEVELS, SEX, PREDICTOR


Objective: The etiology of bipolar disorder has yet to be fully elucidated, but differences in sex hormones have been suggested to play a role in its pathogenesis. An easily assessed marker of prenatal androgen exposure is the second-to-fourth-digit ratio (2D:4D) of the hand. In this study, we aimed to compare the 2D:4D ratio of patients with bipolar disorder to that of healthy controls.