Menstruation is typically framed as a normal, natural biological process, but at the same time, it is also framed as a process that should be kept private or secret—particularly from boys and men (Stubbs 2008; White 2013). This ambivalent cultural context is the backdrop in which girls and boys learn about menstruation, and it continues to influence the beliefs and attitudes of women and men throughout their lives. While girls are seen as those who need to know about menstruation because they will, typically, experience it, nonetheless, many adolescent girls included in one study in the United States reported feeling unprepared for menarche (White 2013). Research performed in the United States indicates that mothers are a primary source of information about menstruation for girls, but they also learn about menstruation from their peers, the media, and school-based health education programs—the latter of which are often gender segregated (Allen, Kaestle, and Goldberg 2011; Fingerson 2005; Koff and Rierdan 1995; Lee 2008). Also, other research from the United States has shown that some girls report not feeling well-educated about or prepared for menarche (Cooper and Koch 2007; Costos, Ackerman, and Paradis 2002). Even when girls report receiving information about the biology of menstruation and how to manage it hygienically, they want additional information about more subjective aspects of menstruation such as how menstruation feels physically (Koff and Rierdan 1995).
Like girls, boys in the United States typically report incomplete and/or inaccurate knowledge about menstruation, and boys generally receive less education about menstruation than do girls (Allen, Kaestle, and Goldberg 2011). Research from Taiwan (Chang, Hayter, and Lin 2012), the U.K. (Lovering 1995), and Australia (Peranovic and Bentley 2017) indicates that gender-segregated health and sexual education curricula rarely include menstruation in the content covered with boys. Even when these programs are not gender segregated as was the experience in a sample of participants from New Zealand, the information provided about female pubertal development and menstruation is often framed less positively than is true for the information about male pubertal development (Diorio and Munro 2000). Of course, formal education programs are not the only place boys learn about menstruation. Research conducted in the United Sates (Allen, Kaestle, and Goldberg 2011) and the U.K. (Lovering 1995) shows that, like girls, boys sometimes learn about menstruation from their mothers. Research more broadly about sexual education in the United States indicates that peers and the media are often key sources of information for boys (Epstein and Ward 2008).
When boys do learn about menstruation, they often report gaining knowledge in relatively informal ways. David Linton (2019) described a theme that emerged from his discussions about menstruation with men: They often first encountered menstruation through a “mysterious incident” or “encounter that left them asking, ‘What’s going on here? What am I not supposed to know?’” (Linton 2019, 8). For example, in one study, some young men from the U.S. reported having learned about menstruation for the first time when a sister experienced menarche (Allen, Kaestle, and Goldberg 2011). This does not mean that they were actually learning a great deal, however. For example, one participant recalled being frightened when his sister had her first period and had “a huge blood stain in the back of her night clothes” (Allen, Kaestle, and Goldberg 2011, 139). When he subsequently asked his mother for more information, “she only stated that ‘you will find out when the time is right’” (139). In another study conducted in the United States, boys reported learning about menstruation through overhearing discussions among female friends and classmates (Fingerson 2005). Men in both the United States (Allen and Goldberg 2009; Allen, Kaestle, and Goldberg 2011; Erchull and Richmond 2015) and Australia (Peranovic and Bentley 2017) often report that they learned information about menstruation from sexual and romantic partners. One Australian man said that “if a man lives with a female partner he needs to understand as much as it is possible about all aspects of her life including menstruation” (Peranovic and Bentley 2017, 120). A participant in another study from the United States discussed how he learned about menstruation in order to help identify when his partner would be most likely to conceive when they decided to have a child (Allen, Kaestle, and Goldberg 2011).
Given the lack of education boys receive about menstruation, the fact that research consistently shows that men report feeling less knowledgeable about menstruation than women is to be expected. Studies done in the United States (Brooks-Gunn and Ruble 1986) and Italy (Amann-Gainotti 1986) in the 1980s indicated that adolescent boys and young men generally reported learning less about menstruation than female peers reported, and they often did not hold an accurate understanding of what menstruation was and how it worked. For example, they might understand that it involves blood coming out of the vagina, but they might attribute to something other than the shedding of the uterine lining, such as “the breaking of the ovaries” or to expel a harmful microbe (Amann-Gainotti 1986, 706). In other cases, they may misunderstand even more of what is involved as was the case with a 14-year-old boy who thought that menstruating involved urinating “blood because the bladder breaks” (Amann-Gainotti 1986, 706).
Similar findings about cursory and inaccurate knowledge about menstruation have since been found in studies with samples from around the globe. High school boys in the United States were described in one study as “half-knowing” about menstruation where they were familiar with it but were unsure of the details such as the differences between pads and tampons or the PMS stood for premenstrual syndrome rather than post-menstrual syndrome (Fingerson 2005, 101). In part because of receiving information from myriad informal sources, a number of participants in one study of male undergraduate students in the U.S. reported that they “pieced together” information about menstruation as children and adolescents (Allen, Kaestle, and Goldberg 2011, 141). In a study of junior high school students in Taiwan, despite most of the male participants being familiar with menstruation, they had less accurate knowledge of menstruation than did their female peers, and they were more likely to endorse cultural myths about menstruation and restrictions on menstruating girls and women (Cheng, Yang, and Liou 2007). These included not eating or drinking iced foods or going to temple while menstruating. Similarly, in another study of Taiwanese early adolescents, boys reported a lack of knowledge and held misinformation about menstruation including that girls have periods every one to two weeks, that menstrual fluid is comprised of “blood, ovum and . . . sperm,” and that when girls “have their periods, they can give both to a baby by themselves” (Chang, Hayter, and Lin 2012, 517).
Research conducted in Australia, however, does indicate that men do often encounter, and even seek out, additional information about menstruation as they get older (Peranovic and Bentley 2017). Much of this added knowledge seems to come from discussions with female partners as was the case with a sample of participants from the United States (Allen, Kaestle, and Goldberg 2011). Given this, it is not clear that men actually know more about menstruation through these types of discussions. It may well be that they are just more familiar with menstruation. Other research conducted in Brazil (Caçapava Rodolpho et al. 2016) and the U.K. (Liao, Lunn, and Baker 2015) focusing specifically on the experiences of men with female partners in perimenopause indicates that there is still a lack of knowledge. Men reported that they were only familiar with menopause in general terms and lacked key information. Some men did, however, feel that they had a responsibility to seek out information about menopause to be better able to support their partners. However, this is another case where men are haphazardly piecing together information from a number of, largely informal, sources.