Increasing people’s knowledge and health literacy can help prevent health problems (
1). Poor health is an independent risk factor for low use of preventive services, higher hospital admission, medication non-adherence, and mortality, and is a consequence of inadequate health literacy (
2).
Health literacy is the ability to obtain, read, understand, and use the information in order to make appropriate health decisions and follow instructions for treatment (
3). Health literacy is essential to promote healthy individuals and communities (
4).
Low health literacy has a significant negative impact on both the health care system and individual health (
5). One way to increase health literacy is to prepare appropriate educational material and tailor it to the target group (
6). The benefits and importance of providing adolescences with education are widely confirmed. Educational material is frequently used by health workers and have advantages such as portability and consistency (
7). Much of this information is forgotten, when only oral information is provided. Thus health workers are encouraged to provide written educational material to people to reinforce and supplement information that has been provided orally (
8).
The instrument used to assess the appropriateness of written material are readability and suitability. Readability refers to the easiness or difficulty of reading an educational medium. However, readability alone is not enough for improving perception. Suitability offers a systematic method to objectively assess the suitability of health information materials for a particular audience in a short time (
9).
One of the hazardous lifestyle factors, especially among adolescents and young people is tobacco use (
10). Smoking, especially hookah smoking, is the leading cause of preventable death. Hookah is as addictive as traditional cigarettes and is hazardous to a smoker’s health (
11). The prevalence of hookah consumption among young people and adolescence is increasing around the world (
12).
Hookah tobacco is often flavored with molasses, fruit pulp, honey, artificial fruit flavors, coconut, mint, or coffee. Flavorings sweeten the taste and aroma of tobacco and make it more appealing, especially in young people (
13).
Tobacco smoke contains more than 4000 different chemicals, which most of them are produced during the process of burning and it contains more than 40 carcinogens, including hydrocarbons and heavy metals (
14).
Smoking causes different diseases and it is better to avoid all tobacco products because none of them are safe (
15). People who smoke hookah are at risk of many illnesses such as respiratory disease, cardiovascular disease, cancer, infertility, and oral and dental problems (
16). Hookah can also cause digestive diseases, respiratory infections, and herpes through oral tube (
17).
About 8 million tobacco-related deaths are predicted by 2030 (
18) and if this trend continues, it is predicted that one billion people will die by the end of the 21st century due to smoking Tobacco (
19).
A survey among high school students in Iran, about the prevalence of smoking hookah, indicated that 51.9% of the boys and 34.4% of the girls smoked hookah (
20). Another study done in Tehran reported a prevalence of 29% of hookah use among Iranian students (
21). A study among students at the University of Florida (USA) indicated that 46.4% of students smoked hookah (
22) and another study in Jordanian medical students showed that 59% of males and 13% of females smoked hookah (
23).
Given the tendency of some adolescents to use hookah, it is necessary to use educational material to educate them about the harms of hookah and its usage. For all target groups, written educational material for health issue will be useful, if it is understood by the recipient (
24). Though, little attention has been paid to the readability and suitability of this adolescent education material for preventing hookah smoking.