Introduction: Several studies have shown that women who have overweight and obese tend to have more severe dysmenorrhea than women with a normal BMI. The results of the preliminary study that have been carried out, obtained information that students who lived in the Yogyakarta Ministry of Health Poltekkes dormitory for more than six months have a prevalence of underweight of 20.13% and overweight of 25.62%. Purpose: The purpose of this study was to determine the relationship between BMI and the severity of dysmenorrhea. Methods: This research is quantitative using primary data sources with a cross-sectional design. The sample in this study were students of the Department of Midwifery. Sampling using non-probability sampling method by purposive sampling as many as 311 people. Result: The analysis of this study was carried out using multivariate. The results of this study indicate that there is a significant relationship between BMI and dysmenorrhea (p=0.006). In respondents with dysmenorrhea, the OR for having severe dysmenorrhea in obese respondents was 6.3 times, compared to respondents with normal weight. Conclusion: BMI in adolescents with obesity affects the severity of dysmenorrhea so physical activity and nutritional intake need to be considered to reduce body weight.

Background: Children, who may lack accurate knowledge about reproductive health, are more likely to engage in risky sexual behavior. Use of the internet to retrieve health information is increasingly common. Issues related to the credibility of the information on health web sites were crucial considerations for students. This study aimed to investigate online reproductive health learning in elementary school students. Subjects and Method: This was a qualitative study with rapid assessment procedure design. The study was conducted in 3 elementary schools in Yogyakarta, from September to October 2020. The key informants were 12 elementary school students aged 8-12 years. The other informants were teachers and parents. Data collection was conducted by in-depth interview using voice note and chat features in Whatsapp program. Data validity were tested by informants triangulation, including teachers, students, and their parents. Results: Elementary school students were interested in taking online learning toward reproductive health. It improved their knowledge. Conclusion: Online reproductive health learning increases intention to health reproductive health in elementary school students. Keywords: reproductive health, online education learning Correspondence: Nur Laili Qomariah. Masters Program in Public Health, Universitas Sebelas Maret. Jl. Ir. Sutami 36 A, Surakarta 57126, Central Java. Email: lailiqomar@gmail.com. Mobile: +6281234190160. DOI: https://doi.org/10.26911/the6thicph.02.44