Abstract
The results of a double-blind placebo study reveal changes of sexual behavior of 51 women followed over three menstrual cycles. Differences in sexual activity during the luteal phase of the cycle (days 18 to 25) were noted. Sexual activity increased for women on contraceptive pills but not on placebo. After examination of the data, hypotheses were rejected that the difference was due to contraceptive pills directly affecting the woman's feeling state or overall activity level. The data are consistent, however, with the following: The presence of endogenous progesterone during natural cycles affects the male so that he does not desire coitus as frequently during the luteal phase. The absence of endogenous progesterone during pill cycles removes whatever restraint progesterone has on coitus. No other interpretation is consistent with the data derived from this study. The influence on the human male may operate via a pheromone as is the case with male rhesus monkeys.
References
Apostolakis, M., Becker, H., and Voight, K. D. (1966). The effect of lynestrenol administration on testosterone, estrogen, pregnanediol and total gonadotropin excretion during the menstrual cycle.Steroids 7 146–156.
Ismail, A. A. A., Harkness R. A. H., and Loraine J. A. (1968). Some observations on the urinary excretion of testosterone during the normal menstrual cycle.Acta Endocrinol. (Kbh.) 58 685–695.
Lobotsky, J. H. L., Wyrs, E. J., Segre, J., and Lloyd, C. W. (1964). Plasma testosterone in the normal woman.J. Clin. Endocrinol. Metab. 24 1261–1265.
Michael, R. P., and Plant, T. M. (1969). Contraceptive steroids and sexual activity.Nature 222 579–581.
Michael, R. P., Herbert, J., and Welegalla, J. (1967a). Ovarian hormones and the sexual behavior of the male rhesus monkey (Macaca mulatta) under laboratory conditions.J. Endocrinol. 39 81–98.
Michael, R. P., Saayman, G., and Zumpe, D. (1967b). Inhibition of sexual receptivity by progesterone in rhesus monkeys.J. Endocrinol. 39 309.
Michael, R. P., Keverne, E. B., and Bonsall, R. W. (1971). Pheromones: Isolation of male sex attractants from a female primate.Science 172 964–966.
Thorneycroft, I. H., and Stone, S. C. (1972). Radioimmunoassay of serum progesterone in women receiving oral contraceptive steroids.Contraception 5 129–146.
Udry, J. R., and Morris, N. (1968). Distribution of coitus in the menstrual cycle.Nature 220 593–596.
Udry, J. R., and Morris, N. (1970). The effect of contraceptive pills on the distribution of sexual activity in the menstrual cycle.Nature 227 502–503.
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This research was supported by funds from the Carolina Population Center and the University Research Council.
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Udry, J.R., Morris, N.M. & Waller, L. Effect of contraceptive pills on sexual activity in the luteal phase of the human menstrual cycle. Arch Sex Behav 2, 205–214 (1973). https://doi.org/10.1007/BF01541757
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DOI: https://doi.org/10.1007/BF01541757