Cervical cancer is a malignancy that often occurs in the female reproductive system and the main cause of cancer death in women, especially in developing countries. Cervical cancer is commonly called the silent killer, because it appears without the sufferer being aware of it. Delayed medical treatment can lead to a poor prognosis for healing the disease and cause death in women. Seeing that the impact of this disease is very dangerous, prevention efforts are needed to overcome this problem, one of which is by expanding the scope of health information targets. Where the target coverage does not only focus on women of childbearing age who are married or have had sexual relations but also broaden the target to young women. Women's lack of understanding about this disease can allow them to carry out risky behaviors that can increase the risk of cervical cancer. Therefore, it is necessary to have health education activities to increase the knowledge of young women about cervical cancer and its prevention efforts. Community service activities are carried out at MAN 2 Jakarta. The target of this activity is female students/teenagers. The extension method used is lecture and question and answer discussion. The results obtained from the pre and post test are an increase in knowledge of students about cervical cancer and its prevention efforts. It is hoped that the increased knowledge of young women about cervical cancer can increase awareness in preventing cervical cancer from an early age.

Premarital sexual behavior in adolescent is currently a concern because it may have negative impacts for the health of the teenagers. This study’s aim was to obtain factors associated with premarital sexual behavior (intercouse) in adolescent girls aged 15-19 years old in Indonesia. This study used the 2017 IDHS data with a cross sectional design. The research sample was 7213 respondents who was taken based on the research inclusion criterias. The results of this study explained that 79 female adolescents aged 15-19 years old who have had premarital sexual intercourse (1,1%). The results of the bivariate analysis used  Chi-Square test revealed that the factors associated with premarital sexual behavior in adolescent girls were education (p-value 0,001), attitudes towards premarital sexual behavior (p-value 0,000), drug use (p-value 0,000), alcohol consumption (p-value 0,000), friends who have premarital sex (p-value 0,000), and having a boyfriend (p-value 0,000). The results of multivariate analysis with multiple logistic regression test, known factors related to premarital sexual behavior in adolescent girls, namely attitudes toward premarital sexual behavior (p-value 0,000) and alcohol consumption (p-value 0,002). The most dominant variable in this study is the attitude towards premarital sex behavior. In this study, knowledge about reproductive health and having a boyfriend are confounding variables. Knowledge about reproductive and sexuality health in adolescents has to be increased  so adolescents have a positive sexuality behavior.