Low Libido as adverse effect of Hormonal contraception

The changes in desire and sexual satisfaction during hormonal contraceptive(HC) use are important elements that might relate to acceptability, compliance and method continuation. Little is known about the influence of combined hormonal contraceptive on sexual functioning. Sexual side-effects have been reported in women taking HC, although no consistent pattern of effect exists to suggest a hormonal or biological determinant⁽¹⁾. Sexual desire most likely represent a complex and idiosyncratic combination of biological, psychological,and social effects. Overall, Literature data show that women experience positive effects, negative effects, as well as no effects on libido during HCs use^{( 2,3,4,5 )}. Moreover, current pill-users seem to discontinue for low libido less frequently than did users of higher dose pills⁽⁶⁾.

In the past years an important trial reported evidence that mood and sexual desire are dissociable and suggested that HCs can have direct effects on women's sexuality. Therfore, the negative effect on sexual interest found in this study was not just a result of HC induced negative mood changes⁽⁷⁾.

Furthermore, a population survey conducted among 1466 women who used different methods of birth control (oral contraceptives, intrauterine devices, condoms, natural family planning, sterilization) indicated that combined oral contraceptives (COCs) and sterilization has less negative impact on physical and psychological functioning than the other methods used⁽³⁾. This evidence is in contrast to what the general public often believes. Nevertheless, with the introduction of oral contraceptives very low-dose ethinylestradiol (EE), sexual disturbances due to vaginal dryness and low desire, is a problem which comes up often⁽⁴⁾.

A recent study evaluated the effects on vaginal dryness, sexual desire and sexual satisfaction of the hormonal contraceptives low-dose EE(20μg EE/100μg levonorgestrel(LNG) versus very low dose (15μgEE/ 60μg gestodene or vaginal ring containing 15μg EE/120μg etonogestrel).

After three cycles,30.4% of the participants taking oral contraceptive containing very low-dose EE,reported vaginal dryness; while the same problem was reported in 12.7% of the COC-low dose EE and in 2.1% of the women using the contraceptive vaginal ring. In the meantime, the highest rates of negative impact on sexual well-being were reported by COC 15μg EE users and this data may be related to falling free testosterone levels.
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In addition, this study reported a rate of discontinuation of 22.3% with COC low-dose EE, 30.4% with COC very low-dose and 11.7% with vaginal ring⁽⁸⁾.

Indeed, cycle control and sexual satisfaction seem to be good indicators of treatment adherence and continuation; although studies on the effects of sex-steroids on female sexual behaviour have not yelded conclusions. Many reports have been established that sexual desire,in women depends on androgen levels.