In the last two decades, policymakers and managers in the health field have played crucial roles in supporting individuals to take care of their own health or their relatives, although the quality and the availability of provided information and materials (depending on the contexts and countries) were not always desirable (
1,
2). Health literacy (HL) is known as individuals’ ability to obtain, process, and understand basic health information and services that are necessary for making proper health decisions (
3). The concept also includes skills of numeracy, insurance literacy, and the abilities needed to navigate the increasingly complex world of healthcare (
4). About a decade ago, Baur (
5) argued that literacy knowledge is never static; instead, HL skills change over the lifespan and are affected by experience and environment.
Primarily, in the literature, HL has been defined as the ability of individuals to place, interpret, and apply health information to their decisions, although the role of society in providing accessible and comprehensible information cannot be ignored in this view (
6-
8). In the Iranian context, this view is adopted by the health system and researchers (
9). Following this view, Namazi (
10) argues that both the health system and individuals play significant roles in improving HL since different human beings receive different responsibilities in their immediate communities. The roles of both those who communicate information and individuals who seek it are of significant importance. Ancker et al. (
6) suggest “health information fluency” and argue that “health information fluency” refers to the universal effective use of health information. They believe HL can embrace a combination of concerns about individual skills. In other words, HL is a multidimensional concept resulting from the interplay between community, family, education, and healthcare systems that empower individuals to take control of their health (
7).
Adequate HL can empower individuals so much that they would play an active role in changing their environment, and they would positively affect community health (
9,
11). Cudjoe et al. (
12) highlight the influential role of HL as a determinant of healthy behavior, although they state pathways through which HL influences health indicators are neither completely clear nor consistent. Likewise, Huang et al. (
13) state that HL plays a leading role in the promotion of healthy behaviors and lifestyles, the prevention of diseases, and the improvement of individuals’ health levels through education.
Meanwhile, students, as a group of individuals, who would be part of the future communities and whose HL level can affect societies, have attracted researchers’ attention (
11,
14,
15). Investigating the HL of individuals who would be part of healthcare providers and the sources of health information in their future careers might further illuminate some aspects of the HL field. College students are known for their dynamic knowledge development and their interactions with the social environment in order to enhance the capabilities they take forward into future life; they dynamically develop their general and professional knowledge (
16). The HL of students majoring in medical sciences is an area that is worth investigating. The evidence from the literature shows that there is still a lack of research on college students’ HL, especially outside the United States (
13).
In general, the literature suggests university students have inadequate HL; however, the results of studies vary based on the setting and the measurement tools used (
16-
19). Even different demographic differences within the same community ended in different results (
14,
15). Elsborg, et al. (
14) concluded that Danish students’ HL relates to their personal background and educational path and believe such results might be of importance when planning curricula and educational activities, including cross-disciplinary courses. In addition, although Chinese male students revealed higher HL than female students (
20), in countries such as Greece (
21) and Taiwan (
22), females had higher HL than male respondents. Evans et al. (
17) observed significant differences in HL among different Ghanaian colleges regarding the self-esteem, health, and financial status of the participants.
Studies comparing the HL of students majoring in medicine and related disciplines to students studying other majors have reported convergent results. Some studies found medical students owned a higher level of HL than their peers in other majors (e.g., Uysal et al.’s study (
19) in Turkey). In America Joseph et al. (
23) and Taiwan Yang et al. (
24), students majoring in health revealed higher HL than respondents who studied other majors. In Australia, medical and allied health students had higher HL than nursing students (
1,
25). However, unexpectedly, medical and health students in China had poorer HL than engineering students regarding their performance on multiple dimensions of a questionnaire developed by Mullan et al. (
25). Several studies also agree investigating the HL of students majoring in health-related degrees is particularly important, as they will be influencing the health choices of others during their professional careers (
20,
26,
27), and there are variables that affect such a literacy.
In the Iranian context, the results of related studies suggest that HL requires more attention. As Momeni et al. (
28) reported, Iranian older adults in their study had a relatively low level of HL (45%). In educational settings, Panahi et al. (
29) reported of 360 respondents, 9.2% (n = 31) of the students had low HL; about 27.6% (n = 94) of the studied participants had inadequate HL, and 42.6% (n = 145) had adequate HL. Panahi reported that just 19.7% (n = 67) of the respondents majoring in medical sciences had excellent HL. Ramezankhani et al. (
30) reported out of 500 students studying at medical universities, 26.4% had inadequate and just 31.2% had adequate HL. Just recently, Namazi (
10) observed that the HL mean of non-medicine students was pretty low (36.4% with limited and 63.6% with optimal HL). Naghibi et al. (
31) reported that 60% of adult respondents (aged 18 - 65 years) in their study had limited or inadequate HL. The controversial results of recent studies might point to the need to conduct more similar studies among Iranian student communities and consider possible factors that might affect HL. Of several factors that might positively affect the HL of individuals, we can consider students’ extracurricular studies.
Some countries have implemented policies and plans to create reading habits in children before school and arrange strategies to encourage reading habits in school children (
32). At the same time, a range of variables have impacts on such habits. Ünlüsoy et al. (
33) considered adolescents’ out-of-school literacy practices and reported that they were more involved in habits related to social media than in print-based studies. The researchers observed that of all the four functions of literacy (including entertainment, social, instrumental, and education-related), the entertainment/social aspect was the first, followed by instrumental and educational functions. Jolliffe and Harl (
34) also reported that college students spent twice as much time per day on extracurricular reading involving technology. Moyer (
35) argues that educators need to update their definition of reading to involve reading in digital aspects. Moyer argues the more individuals increase their no-academic studies, the more they develop their knowledge and understanding. That is, these forms of knowledge can have social realizations.
Likewise, Encheva et al. (
36) hypothesized that reading habits have been transformed due to the changes in the information environment; therefore, the need for enhancing proper information literacy of the users might be to some extent connected to the ongoing changes of information. The emergence of digital collections resulted in a rapid transformation in readers’ practices. Readers have replaced traditional reading materials and practices with more easily reached information and methods. This is more conspicuously present in readers’ preference to use databases that are affluent with information resources in academic libraries. The statistical data accurately support the frequency of use and the tendency to go with digital reading.
Iranian students of medicine spend a significant amount of their time in challenging academic settings and are indulged in lessons and projects that they should finish on time. Expectedly, they might ignore skills or activities that require extra time and commitment. Namazi (
9) argues that by developing the expected level of HL, medicine students can develop themselves to make proper decisions about the health of their future patients. On the contrary, these students are prone to make inappropriate decisions and develop unhealthy behaviors if they do not acquire the proper amount of HL required for both their personal and career lives.
Different studies performed in Iran have reported some obstacles that affect Iranian university students’ extracurricular reading habits, including high costs of books, non-availability of students’ favorite books, homework, school projects, students’ willingness to fill free time with TV programs, lack of enough time, no encouraging instruction about studying habits, scarcity of public libraries, individuals’ reluctance to value studying, being pessimistic about future, having other hobbies, economic problems, Internet addiction, computer games, and books (
37,
38). By looking at the aforementioned hindrances from a general point of view, studies suggest that cultural, religious, social, economic, and political factors have affected Iranian students’ extracurricular habits (
38).
The present study investigated the level of HL and extracurricular reading habits of university students majoring in medicine and how they achieve the health information that they need. Extracurricular reading plays an important role in further developing the thinking skills of students. Health information might be available in several formats (e.g., videos, audio files, and health magazines) for different groups who are interested and seek health information; however, in this study, regarding the participants who are university students, the written mode of information is the focus. Ismoilova (
39) argues that becoming professionally literate in health-related concerns might not be fully predicted and planned in educational programs. That is, the importance of academic courses in the classrooms and practical training cannot end in fully developed professionals if particular extra activities are not added. Extracurricular reading can encourage students to read independently, to get acquainted with the best materials for their profession and their interests, and to further enrich the knowledge they have acquired in the classroom. Independent reading has been practiced in the education system since ancient times, and since 1959, it has been officially taught as a special subject in the extracurricular reading form in some countries (
39).
The present study aimed to investigate the correlation between the extracurricular reading habits of medical students and their HL and to find out if there is a relationship between extracurricular reading habits and each of the five aspects of HL. The five aspects of HL include access, reading, understanding, appraising, decision-making, and applying health information (
40). It was hypothesized that (1) the scores of extracurricular reading habits of the participants correlate with their HL level and (2) there is a relationship between extracurricular reading habits of the participants with their health information reading, their access to health information, their understanding of health information, and their use of health information.
The present study included students of medicine in the context of Iran; therefore, the results might not only expand the literature but suggest areas that are worth further studying (e.g., challenges of online reading habits for students of medicine). In general, extracurricular readings not only enrich medicine students’ understanding of independent reading but also deepen their knowledge, skills, and competencies in subjects that are not fully covered in academically taught materials. Many years of experience have shown that when students choose the materials for their readings, they are led to more valuable content that suits their appeal and needs. Therefore, the availability, selection, and recommendation of materials can be considered one of the important issues facing the methodology of reading outside academic settings.
1.1. Extracurricular Studies
Generally, reading is not defined as a “natural thing” but as an academic subject that students acquire through instruction (
41). Reading also requires a long time for students to learn how to read (
42). Long (
43) argues that reading skill is first a precondition of all the things that are central to the educational issues of a nation, including both occupational and technical education. Long found that the causes of the decline in reading are numerous, and they act differently in the complexity of cultural and cognitive conditions. Increases in the number of media forms and devices and some conditions, including the amateur trend of reading instruction, decreasing rate of economic status, and declining completion rates of higher education are among the highlighted factors. Clark and Foster (
44) stated that most students read texts other than books once or twice a week and indicated they read more if they find more free time. However, later studies indicate that studying habits and methods have changed.
Some studies have investigated what reading for pleasure might look like and what the impact of such programs might be on promoting different skills (
45). Reading beyond academically scheduled activities fosters a critical connection between written texts and the community and can develop communications with books among individuals, teachers, and other related stakeholders, including parents and the wider community. In addition to the beneficial nature of reading, individuals who create more opportunities to merge with literacy-related activities inside and outside of their home have more positive opinions about reading, involve themselves in more leisure reading, and obtain outstanding reading achievement (
46), and demonstrate considerable academic achievement. All these achievements might also include developments in HL. Ismoilova (
39) concludes that, in addition to equipping students with reading skills, extracurricular reading habits nurture active readers to read independently, understand the message, and choose a particular topic. In other words, extracurricular reading can act as the main education tool, increasing the willingness to learn more.