Abstract
Purpose
Infertility represents a peculiar social burden affecting more than 15% of couples, provoking it a real threat to the general quality of life and to the sexual health. The medicalization (diagnosis, therapy and follow up) of the lack of fertility is frequently a challenge in term of personal and couple’s involvement. In particular, while the Assisted Reproductive Technology (ART) has allowed many infertile couples to achieve pregnancy, the therapeutic process faced by the couple bears a strong psychological stress that can affect the couple's quality of life, relationship and sexuality. Despite infertility affects both female and male sexual health, only recently the interest in the effects of ART on the couple's sexuality has grown, especially for women.
Methods
A literature research on the sexual dysfunction in fertility care and particularly in ART setting was performed.
Results
Literature largely found that intimacy and sexuality appear specifically impaired by intrusiveness of treatments and medical prescriptions. Moreover, there is a close relationship between emotional, psychological and sexual aspects, which can be integrated in the new concept of Inferto-Sex Syndrome (ISS) that can impair the ART treatment outcomes. Evidence demonstrates that the assessment of sexual function is necessary in couples undergoing diagnosis of infertility and ART.
Conclusion
A close relationship between infertility and sexuality, both in the female and male partners, was detected. ART treatments may heavily impact on the couple's psychosexual health. A couple-centred program for the integrated management of psychological and sexual dysfunction should be considered in the context of ART programs.
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Introduction
Since the first live birth resulting from in vitro fertilization (IVF) in 1978, a growing number of pregnancies derived from assisted reproductive techniques (ART) has been observed, with an impressive growing trend in the last 15 years. The use of ART has allowed many infertile couples to achieve pregnancy, but the therapeutic process is a strong psychological stress condition that can affect their quality of life as well as the couple's relationship and sexuality.
The diagnosis of infertility is by itself a powerful stress factor, mainly for women who feel impaired their female identity, often burdened with social pressure, but also for men who live with discomfort the inability to procreate, especially if the infertility is caused by a male factor [1,2,3]. Considering that up to 83% of infertile couples report feeling a social pressure to conceive [4], the decision to access ART increases distress of the couple, also burdened with the costs, the ethical implications and the difficulties in managing eventual failures [1]. This stressful condition has been associated with severe anxiety and depression in both partners, with possible immunological alterations and a lower likelihood of clinical pregnancy in in vitro fertilization (IVF) procedures [5].
Infertility affects both female and male sexual health, but only recently the interest in the effect of ART on the couple's sexuality has come into a sharper focus. A recent Italian survey showed that in the Infertile Care Units the attention on sexuality was rather limited, with a strong discrepancy between the two members of the couple, with greater attention paid to male sexuality [6].
The close relationship between infertility and sexuality, both in the female and male, and the need to contextualize sexuality within the infertile couple undergoing ART treatment, may be framed in a broader dysfunctional dimension, conceptualized in the Inferto-Sex Syndrome (ISS) (Fig. 1). The utility to introduce a new taxonomic term is not merely conceptual, but carries the message to consider sexual health along with the reproductive one. Too frequently, sexuality and fertility have been and are considered two different and separate fields, the former studied by the psychosexologists and the sexual physicians, the latter by the gynaecologists. The ISS aims to stress the need of an integrated and shared diagnosis and therapy, considering how sexuality and fertility are, in our species, imbricated, overlapping and strictly correlated functions.
Finally, because of the effects of ART treatments on the couple's psychosexual health, a couple-centred program for integrated management of psychological and sexual dysfunction in the context of ART should be assessed.
Infertility and sexual function
Infertility is defined as inability of a couple to conceive naturally after 1 year of regular unprotected sexual intercourses [7]. At least 50 million couples worldwide experience infertility, a social burden that affect more than 15% of couples [8]. Infertility involves both partners of a couple, therefore, it has different effects on psychology and sexuality in men and women, assuming gender differences in the personal experience of the childlessness. As infertility is always a disease of the couple and the couple is to be treated [9], a similar approach must be pursued for the assessment of the associated sexual dysfunctions (SD). The ISS definition is based on this assumption, as an integrated set of SD in both partners of couples seeking fertility, which must be evaluated and managed with an integrated approach aiming to protect the psychosexual health of the couple and improve the outcomes of ART.
Up to the present date, the difficulty in framing the real dimension of the psychological and sexual impact of infertility is due to, first of all, different cultural habits. In fact, many traditional backgrounds, religions and societies still consider infertility a stigma. Culture, considered as an organized system of beliefs and values, determines all human behaviors including the sexual ones: social models play an important role in determining conducts about parenthood, fertility and sexuality [10]. The fragile balance between what the individual needs and what the society finds to be normal can exert a deep impact on well-being and sexual behavior [11]. Thus, the cultural differences can impact the sex drive in an infertility context [12]. A substantial culture-dependent influence has been reported in each partners’ perception of SD, in their views on sexuality and their own levels of sexual functioning [13, 14]. In addition, ART can collide with sociocultural and religious practices, separating the sexual act from the reproductive function that is the dominant purpose in some cultures. Consequently, the results of SD prevalence in male and female infertility are extremely variable and difficult to compare across studies.
Therefore, surveys on sexuality are based on standardized clinical interview and questionnaires that vary in different studies and that are not always validated, producing many biases due to self-assessment by the partners [15] and being sometimes hard to compare.
Finally, SDs can appear in both partners of the infertile couple in every step of the diagnostic-treatment protocols and might provoke problems in every stage of sexual response, i.e. from desire to arousal and to orgasm.
Female sexual dysfunctions and infertility
Female sexual dysfunction (FSD) is a complex and multidimensional disorder that has a wide spectrum of symptoms and severity, including non-organic and organic risk factors, such as endocrine diseases [16], cardiovascular diseases [17] and health-risk behaviors and lifestyles [18, 19]. Infertility might also be part of the clinical phenotype of some of these conditions [20], such as polycystic ovary syndrome [21], or a consequence of the necessary treatments. The effects of infertility on female sexual well-being have only recently elicited an increased interest, this delay reflecting how female sexuality is underdiagnosed and poorly studied, compared to its male counterpart. Several tools have been developed and validated in the last decades to provide a reliable assessment of female sexual health, among which the Female Sexual Function Index (FSFI) score, a 19-items multidimensional scale for assessing different phases of the female sexual cycle (desire, arousal, orgasm, sexual satisfaction and dyspareunia), is the most commonly used instrument in both the clinical and research settings, both in its long [22] and abridged form [23].
Following a diagnosis of infertility, a woman wishing to conceive may face obsessive thoughts, anguish, perception of inadequacy of her social role, guilt for her own fertility; in case of infertility of the partner, perceived as offense towards her, a tendency to social self-isolation, and sometimes envy of other women's pregnancy have been observed [24,25,26]. As a result, sexuality is heavily affected, thus women usually report major sexual issues such as decreased arousal, hypoactive sexual desire disorder (HSDD) or orgasmic dysfunctions [15] (Table 1).
In cross-sectional studies, a close relationship between sexuality and psychological wellness was evident in infertile female population. In fact, the prevalence of depression was significantly higher in women with SDs (up to 54% in some studies) [27, 28] and depressive symptoms have shown to be a predictor of SD [27,28,29]. The emotional and sexual effects translate into a deterioration of the quality of life [27, 28], especially with respect to relational aspects [30].
Several factors in the diagnostic and therapeutic protocol of infertility can negatively interfere with the emotional aspect, thus justifying a greater impact on the dimension of arousal, desire and satisfaction in female sexuality [27], more related to the relational dimension, and hence including a psychopathological dimension.
With respect to fertile female populations, case–control studies showed conflicting results. Some studies found no differences in the prevalence of FSD in infertile women, as compared to fertile controls [31,32,33,34]. In two studies conducted on a Turkish population, despite no differences in FSD prevalence between infertile and fertile women, the prevalence of FSD was very high [35, 36]. Probably, some cultural dimensions, such as the lack of formal sex education and the perception of sexuality as a taboo, contribute to the poor definition of the size of the problem [35]. Zare et al. found that the most impaired sexual dimension in infertile women was non-communication, i.e. the couple’s inability to talk about their sexual problem, while in fertile women the reduced frequency of sexual intercourse prevails [37].
In contrast, several studies showed a higher prevalence of FSD in infertile women. Indeed, the psychological burden of infertility—with the associated feelings of inadequacy, anxiety and depression [38]—might be a major contributor to the onset of FSD. Some studies have considered a population of women belonging to an infertile group or undergoing treatment for infertility, regardless of the diagnosis or treatment phase in which they were [39,40,41,42,43,44]. The prevalence of FSD assessed by FSFI score ranged from 40% [40] to 87.5% [42], always significantly higher than in the fertile women population used as control, being the arousal and libido domains of sexuality mostly impacted [40, 41].
It has been found that up to 90% of infertile women had a reduction of sexual functioning as compared to 26% of the fertile control population, scoring lower in terms of sexual satisfaction and significantly higher (maladaptive) on all six domains of dyadic functioning (task accomplishment, role performance, communication, affective expression, affective involvement). The authors speculated that infertility could be considered as a specific ‘crisis’, in which the quality of sexual function is closely associated with treatment procedures [45].
Male sexual dysfunctions and infertility
Many studies have focused exclusively on the impact of infertility on male sexuality, with a prevalence of SD varying from 8 to 85% (Table 2). Similarly to what has been reported in women, the psychological burden of infertility is relevant for men as well, most commonly being associated with increased rates of depression [46].
SD males with infertility often present with erectile dysfunction (ED), defined as the consistent inability to obtain or maintain a penile erection of sufficient quality to permit satisfactory sexual intercourse [47]. The first evidence dates back to 1980, when Berger reported the experience of impotence on 11 patients out of 16 infertile couples [48].
Over time, studies using the popular and well-validated IIEF (International Index of Erectile Function) score have identified a wide variability in the prevalence of ED, ranging from 18 to 85% [49,50,51,52,53,54].
In two Italian studies by Lotti et al. in 2012 and 2016, an ED prevalence of 17.8% and 18.3%, respectively, was reported [55, 56], significantly higher than in men of fertile couples [56]. In the most recent sub-analysis of the Assessment of Multiple Intrauterine Gestations from Ovarian Stimulation (AMIGOS) trial, 8.9% of men showed mild-to-moderate ED (assessed prior initiation of fertility treatment), but SD was associated with a worse quality of life and a greater risk of depression [57]. This prevalence, lower than reported in other studies, is possibly due to the study being a secondary analysis of data from a trial with different outcomes and to the almost 21.3% of male partners (192/900 men) not included in the analysis.
The need to plan sexual intercourses with consequential reduction of the spontaneity of sexual pleasure contributes to the onset of SD in the male population. A 2015 Korean study of 236 infertile couples found that 8.9% had more than mild-to-moderate ED (IIEF-5 score ≤ 16), whereas 42% had mild ED (IIEF-5 score 17–21) during fertile periods of the partner, with lower IIEF total score and higher sexual relationship stress during fertile versus infertile time period, confirming that the couple's relationship, in looking for pregnancy, is a key determinant of sexual well-being [58].
In a very large Japanese series of 4220 infertile patients, up to 52.7% of male partners had ED but above all 26.2% had timely ovulatory intercourse failure [59]. The latter data can support the bidirectional relationship between infertility and SD, with ED representing a cause of infertility in planning sexual intercourse for reproduction.
In support to the stressful role of diagnosis and treatment plan of infertility on sexuality, Elia et al. have investigated, using the abridged psychometric tool IIEF-5, the sexual health of patients of both sexes for pleasure and intercourse for reproduction (i.e. ovulatory period) [60], showing disorders in sexual intercourse for reproductive purposes in 23.7% of the subjects as compared to 8.9% in sex for pleasure, especially concerning orgasmic function, sexual desire and satisfaction scores (no differences on domain of ED).
Indeed, few studies have investigated the association between infertility and sexual satisfaction in the male population (Table 2) [53, 61, 62]. The reduced satisfaction was closely and highly correlated to the duration of infertility and to the desire for parenthood [62]. Actually, the prevalence of HSDD has been less investigated in male than in female partners, where the desire domain is often very compromised by the infertility-related stress [53, 63].
Finally, only few studies have shown that infertility also involves ejaculation disorders. All studies on this topic agree on an increase in the prevalence of premature ejaculation (PE) in infertile men (12–50%) [51, 64, 65]. In a study carried out in the Italian population, a 12.9% prevalence for PE was found by the Premature Ejaculation Diagnostic Tool (PEDT) among infertile males, but prevalence was even higher in the subgroup of azoospermic men [56]. Additionally, ED and PE could be associated, with each one contributing to the development, or progression from subclinical to overt, of the other [66], therefore, providing additional confounding factors to the exact pathogenetic mechanisms associated with infertility. For all these reasons, the most recent guideline on PE management published by the Italian Society of Andrology and Sexual Medicine (SIAMS) suggested investigating sexual function as well as psychological health status of male patients of infertile couples [67].
Sexual dysfunctions: a view of couple
Infertility makes a real challenge to the sexual life and SD are an emerging paradigm as a typical “couple disorder” [68], especially in the setting of infertility, where it constitutes a broader dimension that can be summarized in the concept of ISS.
Clearly, in the infertile couple, the intercourse is often scheduled and deprived of spontaneity. In the specific setting of the therapy of infertility, the purpose of the sexual intercourse is the conception of a child with the consequential de-eroticization of the sexual act. An alteration in the couple communication can occur in the presence of conflicts, along with adjustments of the relationships with a role of strength in favor to the fertile partner. In this sense, psychological distress, marital relationships and sexual satisfaction are closely linked in infertile couples [69].
For this reason, the evaluation of sexuality should consider the couple as a whole. The majority of studies included the perspective of a single partner, without considering that both partners’ responses to infertility interact and influence each other’s psychological and sexual adjustments.
Several studies have contextualized the assessment of sexual function in the couple (Table 3). In 200 infertile couples whose infertility factor was 62% female and 17.5% idiopathic, a significant reduction in the FSFI score was found, particularly in the domains of satisfaction, orgasm and pain. Actually, their husbands had a significantly higher prevalence of ED (52.5%) and PE (23.5%) tested by SHIM score (Sexual Health Inventory for Men, a validated, 5-items version of IIEF score), a condition that was not the cause of infertility but contributed significantly to the worst sexual health of women [70]. Similarly, a positive correlation between FSFI and IIEF scores was found among partners of infertile couples [27]. At the same time, SD in the female partner were a positive predictor of ED of the male within couple [71]. These findings support the emerging paradigm of ISS as a sexual and relationship disorder of infertile couples and emphasize the importance of screening both partners before planning an ART treatment for infertility.
Personalities, as measured by the attachment styles [72, 73], and psychopathological traits, such as anxiety and depression [74], are dramatically able to influence sexual behaviors in both sexes. A recent study investigated the sexual function in couples undergoing infertility treatments in association with attachment insecurities (anxiety, avoidance) [75]. This is a further aspect to consider in the complex couple’s relationship within the infertility setting: anxiety in woman was associated with difficulties in lubrication, while difficulty in reaching female orgasm was related to avoidance by the male partner. Undoubtedly, medically prescribed sexual intercourse along with an unresponsive or insensitive male partner, may relate to a female sexual pleasure that is felt less of a priority.
A focus point in assessing sexuality within the couple, is the gender difference in the experiential and personal response to the childlessness. The more severe psychological impact of infertility on the female partner has often been speculated [76,77,78,79], although a lot of men experience increasingly prevalent SDs in response to the diagnosis and treatment of infertility [80].
Early studies, over 30 years ago, pointed out that women experienced higher levels of stress than male subjects, already at the time of diagnosis of infertility, with an interaction between gender and sexual satisfaction [4, 81, 82]. This finding can be partially framed by the consequences of treatments for infertility that are usually more intrusive for women and mainly impact on female quality of life [82, 83]. Moreover, mood disorders are more prevalent in women: clinical depression occurs in 26.2% of women and 9.2% of men undergoing ART procedures, while anxiety may be encountered in 14.8% of women and 4.9% of men [78, 84]. Motherhood is believed to be a perceived essence of a woman’s identity and an identity as infertile woman receives a huge emotional investment [4, 85]. The loss of self-esteem and sexual relationship satisfaction occurring with the failed search for fertility, seems to be more pronounced in the female partner [86]. Particularly, sexual satisfaction is adversely affected by the consequences of infertility, such as poor self-confidence and depression, which lead to couples’ burnout, intended as an emotional and physical exhaustion caused by the incompatibility between expectations and reality. Sexual burnout has a significant impact on both general and somatic exhaustion and distress, and it is experienced more by infertile women than their male partners, being associated to psychological disorders, marital issues and dissatisfaction [87].
However, in couples undergoing infertility treatment the male partner may experience a loss of potency, mostly exacerbated by and during scheduled sexual intercourse [80]. It has been demonstrated that men who experience stress and SD from infertility and its diagnostic-therapeutic procedures have significantly low sperm parameters. The reduction of male stress associated with ART procedures represents an essential component of infertility management, also to reduce the vicious circle related to sperm collection and improve sperm parameters [80].
The etiology of the infertility is another important factor in assessing gender differences in distress and sexual satisfaction: in couples where both partners were infertile, only women experienced less marital and sexual satisfaction, while the female infertility factor leads to higher self-esteem distress only in woman as compared to husbands, with no differences either in sex or in distress in male partners regardless the infertility diagnosis [88]. However, there are no univocal results [89, 90].
Interestingly, psychological and sexual attitude may change through the course of infertility treatment. It has been shown that these components did not deteriorate through the diagnostic plan (from diagnosis and in the following 6 weeks), even if the highest level of stress was found at the time of the initial assessment [81]. In contrast, others speculated an effect of the treatment steps on sexual function. Considering the assessments of both members of the couple before and after intrauterine insemination (IUI), in men only the ED subscale had a lower score at the time of diagnosis (therefore, before treatment), which could be linked to the performance of the diagnostic exams. Again, the gender difference was reflected in a lower score of almost all FSFI domains in both treatment phases (before and after IUI) as compared to fertile women [83].
In point of fact, the recruitment of both partners should be encouraged in future studies to assess how both members contribute to the couple’s sexual adjustment in the context of fertility treatment settings. The use of validated tools, that offer a framework to contextualize the sexual and psychological function into the couple, should be encouraged.
Sexual function in couples seeking fertility treatment by ART
Sexual dysfunction in couple undergoing ART is a relatively new topic, only recently explored by scientific literature. In fact, most studies on the impact of infertility in sexuality have involved couples seeking fertility care at the first assessment in infertility clinics, with no systemic evaluation of the impact of the infertility treatment program on sexual health [90, 91]. Although a substantial agreement was detected in the recent literature, we found significant heterogeneity among the experimental protocols, mainly because of the different aims and methodologies adopted to assess sexual function (Tables 1, 2, 3).
Couples requesting ART may be sexually dysfunctional either for the mentioned psychological pressure of childlessness (and for all the reasons seen before, whereby SDs represent a couple disorder within the infertility setting) or for a reaction to failed infertility treatments. Interestingly, couples undergoing ART procedures, such as IVF, reported that sex became less enjoyable after infertility treatments [92]. In a Japanese study, in 92 couples who started therapeutic interventions such as IUI and IVF, the needed, obvious manipulation of the sexual setting significantly produced infrequency, non-sensuality, non-communication, male dissatisfaction and male avoidance [93].
Infertile couples undergoing ovulation induction treatment and timed intercourse, followed by IUI on the third month, have been investigated by Bayar et al. [94]: in this study, both partners experienced an increase in the prevalence of SD—from 60 to 72% in women and from 34 to 48% in men. In the male partners there was an increase in HSDD, while in women all domains were affected, but especially disorders of orgasmic satisfaction and arousal [94]. It is likely that physically disturbing procedures, the sense of being “monitored”, the need of “having sex by the clock”, the loss of the eroticization of intercourse (first aimed to conception and afterwards deprived of its main purpose) affect sexual self-image and desire. A negative experience of repeated treatment failures may also contribute to the increase of SD. In this study, however, the FSFI score did not differ before or after IUI treatment in women, although it remained significantly lower than in fertile couples, while the IIEF score in men was significantly lower at the time of diagnosis. The authors speculated that the sample of patients were candidates for IUI, therefore, they suffered from a moderate infertile condition that did not require complex techniques, and could still have a more optimistic view of their situation and less psychological and sexual distress [83].
The ART method has an effect on the frequency of sex. IUI couples calculate more often the space between relationships to enrich the quality of the sperm than couples under IVF)/intracytoplasmic sperm injection (ICSI). In addition, couples under IUI have more sexual intercourses during treatment periods than couples who are on IVF or ICSI [95].
However, this result highlighted the different factors of infertility treatment that affect the prevalence and type of SD either in men or in women.
Male sexuality under ART
At the beginning of infertility treatment, men often experience a feeling of stigmatization because of a perceived lack of masculinity, which is possibly even more challenging than the therapy for infertility itself [96]. Men tend to adjust their sexuality to the project of conception and often mistake the ability to conceive with virility [95]. Moreover, men often experience more difficulties then their female partners to accept an ART program, just because they perceive it an intrusion into their virility [97]. The requirements of medically assisted procreation—i.e. abstinence period, collection of sperm from masturbation in a cramped room—also contribute to the difficult acceptance of the condition.
An Italian survey found high prevalence of male SD among men undergoing ART, with 56.2% reporting ED, 25% PE and 18.7% HSDD [6]. In a Japanese study in 92 couples who started ART treatment, such as IUI and IVF-ET, the sexual satisfaction of male partners was significantly lower than female partners in those aged 30 years or older [93].
During ART, medical investigations and female expectations may lead to SD in the male partner [97]. Men often feel at unease with their involvement as “sperm donors”: 11% of men cannot provide the sample on command, following transient ED or orgasmic disorder, in particular after detection of an abnormality in the results of their previous semen analysis [98]. Producing semen in the IVF clinic may be stressful and perceived as intrusive, therefore, contributing to the onset of ED or worsening of subclinical symptoms [66, 99], to a greater extent in subjects with a longer duration of infertility and with increased levels of anxiety [96, 98]. In infertile men, the close association between ED and psychological burden has been demonstrated (especially anxiety and depression) [100].
In infertile men seeking fertility treatments, sexuality is closely linked to the outcome of procreation. A study of 141 Turkish infertile couples undergoing IVF treatments showed that in couples who had obtained a child through ART, the IIEF-15 score increased significantly from 16 to 21, demonstrating that experiential anxiety could contribute to the onset ED. Instead, no effect was shown in the prevalence of PE tested with PEDT tool. The successfulness of ART treatment and the pregnancy achievement could have a reducing effect on sexual relationship stress [49].
A possible significant contribution on male SDs and on marital relationships is the duration of treatment or the number of ART cycles, but unfortunately this parameter has been seldom investigated. A study reported that in newly diagnosed and treated infertile patients (within 3 months), sexual satisfaction was reduced compared to those diagnosed with longer infertility; however, the duration of treatment did not correlate with a worsening of sexual satisfaction [62]. Another study in Turkish infertile population undergoing ART found no relationship between SD and sexual satisfaction on one hand, and duration of infertility, duration of treatment and number of ART treatments on the other hand [77].
More extensive research on all these topics is warranted.
Female sexuality and ART treatments
Most of the studies on sexuality in couples undergoing ART have focused on the female component. During ART, especially in women, sexual interest, frequency of intercourse and sexual satisfaction decrease. Every month there is a distressing wait for the result of treatment. In women every failed cycle may stress the symbolic or real loss of a child, worsen self-esteem and generate feelings of anger, depression, emptiness, sadness and guilt.
The Italian Society of Andrology and Sexual Medicine (SIAMS) found that 43.7% of women seeking fertility treatment had HSDD and 12.5% experienced dyspareunia [6]. Such a high prevalence of SD in women undergoing ART is confirmed by studies carried out in other populations: in Iranian women referred to an infertility clinic, albeit with a non-validated tool, 55% had impaired sexual function and sexual satisfaction. Up to 41.6% reported a change in the frequency of sexual intercourse and more than 50% reported experiencing anxiety during an intercourse after starting infertility treatments [101]. This result confirms the impact of both the diagnosis of infertility and therapeutic procedures and their failures on psycho-sexuality of the female [40].
The evaluation of homogeneous populations, such as those undergoing specific ART treatments, can help to identify the specificity of the FSD, and consequently to set in the sexual, psychological and quality of life comprehensive aspects. Since IUI is usually performed at early stages of infertility treatment, their cycles may appear be less stressful when compared to IVF or ICSI. However, patients undergoing IUI experienced lower sexual function (significantly reduced FSFI) especially in the domains of arousal, desire and satisfaction, as well as a negative effect on the quality of life [102].
Women undergoing IVF may be at higher risk for SD. In 136 women undergoing IVF within the past year or currently on IVF program, a significantly less desire for sex, more difficulties achieving orgasms, less frequent sexual activity, less satisfaction with sex, and poorer overall sexual function were reported as compared with the non-clinical cohort. The most prevalent sexual problem was lack of sexual interest or desire, with over 30% of cohort reporting “no desire”, while inability to orgasm was the second most commonly reported problem. These sexual concerns resulted to be predictive of poorer fertility-related quality of life, assessed by Fertility quality of life tool (FertiQoL), an internationally validated instrument to measure quality of life in individuals experiencing fertility problems. The first interesting aspect was the lack of statistical relationship between sexual function, the duration of infertility and the number of the IVF cycles. On the other side, 23% of women reported not being sexually active in the previous month, because of low desire, anxiety about sexual performance, vaginal dryness, but also for ART treatment-related requirements, such as the coached abstinence, or psychological burden [103]. For all these reasons, women undergoing IVF have a higher risk of SD.
More recently, other two works investigated the effects of the IVF program on female sexuality. A Turkish prospective study found a very high prevalence of SD (above 90%), measured by FSFI, among women undergoing IVF treatment, independently of the causes of infertility (idiopathic or by poor ovarian reserve) [104]. The author speculated that the high rates in the study were partially due to religious and cultural issues; moreover, all the patients were scheduled for IVF, with a prolonged history of medication resulting in a longer period of discomfort and a huge anxiety related to the highly intensive and challenging nature of the treatment. Another study, again on a Turkish population, confirmed that sexual function was adversely affected by the long duration of infertility and the increase in the duration of treatment [41]. They stressed the need to consider sexual health in couples undergoing IVF, because the stress resulting from the treatment overlapped the anxiety related to infertility.
The rate of FSD in couples undergoing IVF was lower in an Italian study, where 30% of 269 patients reported an FSFI score ≤ 26.55, as compared with other studies [105]. In this survey, women had been enrolled on the day of the oocyte collection, therefore, in coincidence with the peak physical and psychological effects of the treatment itself. Female sexual function in this special population was associated with specific psychological risk factors: all FSFI domains (desire, arousal, lubrification, pain, orgasm and satisfaction) were affected and inversely related to FPI score, particularly infertility-related social, relational and sexual concerns. Therefore, the cause of infertility (male or female) and the number of previous IVF cycles seems here not really able to affect the female sexual function. It may be thought that infertility itself is not directly related to SD, but also that female sexual function is mainly associated with the psychological concerns linked to infertility. Social concerns may be generated by the above-mentioned social pressure about conception or by the time spent with couples who have a child. To prevent the psychological burden of couples and the (rarely mentioned and rarely studied) potentially high risk of drop out from treatment, it is necessary that all these individual, relational, social and specifically sexual wellness aspects are not neglected. Addressing sexual health in several (if not all) medical contexts has an unique and peculiar role in motivating patients to follow challenging diagnoses and therapies [19].
Very few studies evaluated the presence of genito-pelvic pain/penetration disorder (GPPPD) in women under ART, even if they are the expression of the mutual connection between infertility and FSD. Vaginismus prevents both the intercourse and the ability to conceive and expectations of women’s sexuality and fertility may particularly impact on the sufferers [106, 107]. Out of the 236 infertile women evaluated by Bakhtiari et al., 28% suffered from dyspareunia and 15.5% from vaginismus [101]. Only one prospective observational study investigated the prevalence of vaginismus in the female population undergoing an IVF/ICSI procedure, identifying few cases but focusing on some clinical conditions that should be detected and managed during infertility treatment [108]. Vaginismus seems to be less prevalent than other sexual dysfunctions but psychological variables are the most responsible factors for vaginismus [109,110,111]. It is likely that often women might not be aware of their disorder, which might lead to a low prevalence rate [112].
Finally, limited studies were conducted in couples undergoing heterologous fertilization and oocyte donation. Heterologous artificial insemination introduces a third figure (the donor) into the dynamics of the couple, which may impact on the sexual life. Although particularly important, this aspect has been poorly studied yet. Women awaiting oocyte donation may experience emotional and sexual impairments. In an American study, one-third of women who underwent IVF with oocyte donation were depressed and 46% had an FSFI score indicative of SD risk [113].
Evidence proves that the type of protocol may influence the sexual desire, and not exclusively in women: couples enrolled in IUI–IVF have more sexual desire disorders than couples enrolled in ART procedure with donor. However, couples with an intra-marital reproduction project (IUI and IVF) more often recognize that they seek pregnancy more than sexual pleasure with respect to couples under heterologous IVF [95]. Overall, couples in homologous ART were shown to have higher depressive state, anxious symptoms, general infertility-stress and specific infertility-related sexual concerns than the heterologous group [78], with a significant impact also on the quality of life [114]. All these results may be explained by the higher expectation of the couples undergoing homologous ART that might feel themselves more responsible for the pregnancy outcome. Furthermore, in heterologous ART procedures, male gender has been associated with lower anxious symptoms, and in both partners infertility-stress dimensions were less related to depression and anxiety [78].
Sexuality assessment in ART protocol: an unmet need
Infertile couples seeking infertility care should be walked through sexual functioning. In particular, their emotional, mental and sexual problems must be addressed within infertility treatment programs [79].
There are many factors that make the assessment of sexual function and the management of ISS a necessity in couples undergoing ART.
First, procreation disconnected from sexuality and (natural) fertility redraws the bounds of the couple, through the presence of third figures, acting on both diagnosis and therapy of infertility, extending to them the perimeters of intimacy.
Couple closeness and intimate behaviors could be impaired by diagnostic procedures, intrusiveness of treatments and by the complex medical prescriptions. Moreover, the not unusual ART failures, which exceeds two-thirds of the aspiration cycles [115], can further destabilise the couple's solidity [116].
The infertility-related distress, especially for women, affects the quality of sexual function, while sexual concerns may impact couple sexuality during ART treatment [105]. This emotional stress can be so strong that in a high percentage of cases it leads to drop out since the first cycle of treatment [117]. This may explain why up to 24% of couples, with unexplained or mild male infertility, are able to naturally conceive after ART failures [118]. Therefore, the close relationship between emotional, psychological and sexual issues can impair the treatment outcomes. In anxious and depressed women, fertility treatments seem to be less effective. Among infertile women undergoing their first cycle of IVF, those with a recent diagnosis of anxiety or depression were 40% less likely to conceive (OR 0.58) as compared with women without psychological impairments [119]. In a national registry of more than 40.000 ART-treated women in Denmark, a diagnosis of depression was associated with a significantly lower number of ART cycles and a lower mean number of ART live births [120].
The psychosocial implications of infertility and ART are substantial: particularly, the couple’s sense of self-identity and personal acting, mental wellness, sexual and marital relationships, reproductive efficiency, compliance with treatment and pregnancy outcomes are all impacted by psychological influences, which in turn are integrated into the couple relationship [121]. The unique psychosocial set of ART treatment for infertility may directly interfere with a couple’s usual pattern of sexual behavior, resulting in SD for both partners [122]. While there is at the present date no study investigating the topic using validated tools, such as the Orgasmometer [123, 124], it is likely that orgasmic function of infertile couples is also impaired, due to a de-eroticization of the sexual act.
An integrative look at the medical and non-medical (psychological and social) factors that contribute to sexual problems is mandatory both at the first stage of infertility diagnosis, and during the most advanced stages of treatment and ART procedures.
Psycho-sexological counselling is essential for the infertility treatment to identify couples at risk of developing psychic and/or sexual dysfunctions, aiming to reduce anxiety, to explore emotional aspects and address the psychological, relational and sexual problems related to ART process and its possible failure, even to accompany parenthood in case of a positive outcomes. The negative impact of ART treatments on sexual life with the possible reduction of sexual encounters and the effect on sexual desire may trigger transitory SD, possibly transitioning to permanent SD [15].
The medical and therapeutic program should encompass an integrated approach to address the stress associated with treatment of infertility, along with a sexological assessment through standardized psychometric tools (IIEF and PEDT for men, FSFI for women and Orgasmometer for both).
The management of ISS will help to bring again in the couple’s dimension the emotions and intimacy decontextualized by ART procedures. Moreover, the assessment of psychological health and sexual wellness is fundamental to plan a possible pharmacological intervention. For example, in men seeking fertility care, ED is the most frequently diagnosed SD [6, 48], for which is necessary to consider both organic and non-organic comorbidities [125]. If psychological components prevail, low-dose PDE5i along with psychological therapy may be effective [48, 126]. Sildenafil administration before semen collection for IUI or planned intercourse for a postcoital test is shown to be effective in reversing stress-induced transitory ED and improving seminal parameters, such as the percentage of spermatozoa with linear progressive motility, as well as the number of spermatozoa penetrating the cervical mucus [80]. In organic ED, PDE5i such as sildenafil or avanafil should be prescribed [127,128,129,130]. It is also worth mentioning that in some cases the diagnosis of infertility can felicitate the progression from subclinical to overt ED [99] or to overt PE [66], as depression and anxiety could be the proverbial “straw that breaks the camel’s break” in a subject with marginally impaired control over erection or ejaculation.
Instead, lifelong and acquired PE [131] are most likely to benefit from combination therapy of pharmacological treatment with short-acting serotonin re-uptake inhibitor dapoxetine and psychosexual behavioral therapy [48, 67, 132]. Also PDE5i may be useful for treatment of PE that have showed to prolong IELT with acceptable adverse events [133].
In female partners undergoing ART treatment, the presence of dyspareunia, vulvodynia and vaginismus must be assessed, because psychosexual factors are present in these sexual pain-related disorders. Vulvodynia and dyspareunia can be frequent in young women, especially if subjected to intrusive genital procedures: they can be caused by infections (i.e. candidiasis), vulvar dermatoses, irritations from excessive hygienic habits, or by lubrication disorders frequently associated with arousal dysfunction. Vaginismus is one of the least considered dysfunctions, frequently diagnosed after a complaint about infertility instead of sexual intimacy [107]. It should be always taken into account that an ART program implicates vaginal manipulation during transvaginal ultrasound (TVUS) examination in ovarian stimulation, oocyte retrieval and embryo transfer, entailing a challenge to these patients [108].
Disorders of female sexual interest and arousal must be managed through sexual education, psychological couple support, psychotherapy and, in peculiar sociocultural contexts, even with meditation training or acupuncture to further reduce anxiety and depression [134, 135].
A multidisciplinary team is essential within a fertility care setting, which considers a patient-centered and couple-centered perspective to manage the ISS, along with intra-cycles interventions aiming at both ART success and psychosexual and marital wellness.
Conclusion
Infertility constitutes a challenge for the sexual life, with SD emerging as a typical paradigm for “couple disorder”, particularly in the setting of infertility in which can be framed as the concept of ISS. The merit of this new taxonomic category could be found in the identifying the peculiarity of sexual dysfunction due to infertility—such as HSDD or ED, and, vice-versa, of infertility due to sexual dysfunction—such as HSDD or vaginismus. Moreover, the ISS stresses the need of considering fertility and sexuality as a strict clinical unity, promoting the dialogue, not yet strong enough, between experts in reproductive and sexual medicine(s). In fact, either different cultural habits in the examined patient cohorts, or the lack of standardized tools for sexuality assessment in sterility care setting, or the different comorbidities that overlap throughout the course of infertility treatment, make the real dimension of psycho-sexological impact of infertility difficult to assess, understand and to treat. Doctors exclusively focused on the lack of fertility itself and to the technical aspects of the diagnosis and treatment may easy lose this crucial part of the issue.
Unavoidably, psychological and sexological attitudes change through the course of the infertility diagnostic program, with different implications for the members of the couple. When the couple needs recourse to ART, additional factors may be involved such as either intrusiveness of the procedures, or perception of the disconnection between sex and reproduction, de-eroticization of the sexual intercourse, or finally, increased psychological pressure in case ascribable to procedural failures. Women, often more involved in ART procedures regardless of the cause of infertility, are likely to be particularly affected in their psycho-sexological life side, especially if second level techniques (IVF/ICSI) are requested.
Extensive evidence makes assessment of the psycho-sexological function mandatory in couples under ART. Rewiring the couple dimension with loss of intimacy and involvement of third figures, and the mutual relationship among emotional stress, sexual function and outcomes of ART procedures, may contribute on higher percentage of treatments’ failures or drop out of the couples. The future challenge is to support both partners, to design a couple-centred approach in the infertility treatment plan, grounded on a multidisciplinary team that guarantees a comprehensive management of ISS, as all the emotional, relational and, inevitably, sexual aspects of couples seeking parenthood.
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AS and EAJ are partially supported by the Italian Ministry of University and Education PRIN grant # 2017S9KTNE_002
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Luca, G., Parrettini, S., Sansone, A. et al. The Inferto-Sex Syndrome (ISS): sexual dysfunction in fertility care setting and assisted reproduction. J Endocrinol Invest 44, 2071–2102 (2021). https://doi.org/10.1007/s40618-021-01581-w
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DOI: https://doi.org/10.1007/s40618-021-01581-w