Do oral contraceptives improve vocal quality? Limited trial on low-dose formulations

Ofer Amir*, Tal Biron-Shental, Chava Muchnik, Liat Kishon-Rabin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


OBJECTIVE: To evaluate the effect of low-dose monophasic oral contraceptives on female vocal quality. METHODS: Acoustic voice parameters of six women who use oral contraceptives and six women who do not were evaluated repeatedly during the menstrual cycle. Frequency and amplitude variations were measured using a computerized voice analysis program. Repeated-measures analysis of variance was performed to test differences between groups for each acoustic voice parameter. RESULTS: Vocal stability among the women who use oral contraceptives was significantly better than among those who did not use oral contraceptives (P < .05). Specifically, amplitude and frequency variations between successive vocal cycles were smaller in women using oral contraceptives in comparison with the control group (.24 dB versus .37 dB and .86% versus 1.27% for amplitude and frequency variations, respectively). CONCLUSION: Contrary to the reports of adverse effects that high-dose pills have on voice, low-dose oral contraceptives show a favorable influence on voice in young women.

Original languageEnglish
Pages (from-to)773-777
Number of pages5
JournalObstetrics and Gynecology
Issue number4
StatePublished - 1 Apr 2003


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