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Due to its effect on the caliber of generations to come, iron deficiency anemia in teenage females is one of Indonesia's most pressing reproductive health concerns. Adolescents' awareness to autonomously adopt preventative actions is shaped mostly by their knowledge. The purpose of this research is to determine whether there is a correlation between the prevalence of anemia among teenage females in Boyolali Regency and their degree of education. Using a cross-sectional design, this study employs quantitative correlational analytic methods. An accidental sampling approach was used to obtain a sample size of 80 respondents from the population of seventh grade female pupils. A digital POCT device was utilized to quantify the incidence of anemia variables based on hemoglobin (Hb) levels, while a structured questionnaire instrument was employed to gather data for knowledge variables. The Chi-Square test was used to assess the bivariate data analysis. According to the univariate analysis, 62.5% of the participants (50 respondents) had a decent level of knowledge, and 73.8% of the participants (59 respondents) did not suffer from anemia (Hb > 12 g/dL). With a p-value of 0.000 (p < 0.05), the results of the bivariate test were generated. Anemia is more common among female students at MTs Al Ihsan Doglo who have a higher degree of expertise, according to this study. School districts should keep an eye on students' iron pill use and improve their nutrition education programs.

Anemia is a condition with hemoglobin and erythrocyte levels lower than normal, which is 12 grams/dl for adolescents. Iron deficiency anemia in adolescent girls is at higher risk because it causes a decrease in immunity, making them susceptible to health problems. One of the causes is the lack of knowledge of adolescent girls about healthy lifestyles and self-motivation regarding the importance of balanced nutrition in preventing anemia. The purpose of this study was to determine the effect of education on the level of knowledge of adolescent girls about anemia. The type of research used was quantitative research with a quasi-experimental research design with a pre-test-post-test research design. The sample consisted of 90 adolescent girls. The results showed that before being given education, the majority of respondents were in the sufficient category (45.6%), while after being given education, the majority were in the good category (84.4%). The results of this study showed that there was a significant difference in the level of knowledge of adolescent girls about anemia before and after being given education with a significance value of 0.000, which means there was a significant effect of education on the level of knowledge of adolescent girls about anemia.

Anemia is a condition with hemoglobin and erythrocyte levels lower than normal, which is 12 grams/dl for adolescents. Iron deficiency anemia in adolescent girls is at higher risk because it causes a decrease in immunity, making them susceptible to health problems. One of the causes is the lack of knowledge of adolescent girls about healthy lifestyles and self-motivation regarding the importance of balanced nutrition in preventing anemia. The purpose of this study was to determine the effect of education on the level of knowledge of adolescent girls about anemia. The type of research used was quantitative research with a quasi-experimental research design with a pre-test-post-test research design. The sample consisted of 90 adolescent girls. The results showed that before being given education, the majority of respondents were in the sufficient category (45.6%), while after being given education, the majority were in the good category (84.4%). The results of this study showed that there was a significant difference in the level of knowledge of adolescent girls about anemia before and after being given education with a significance value of 0.000, which means there was a significant effect of education on the level of knowledge of adolescent girls about anemia.

Anemia in adolescents is a serious health issue that impacts students' concentration and productivity. This community service activity aims to conduct early detection of anemia through a comprehensive manual screening method at three high schools: SMA Sains Alumnika Palembang, SMA Candradimuka, and SMA Mandiri. The implementation method involved three main stages: identification of clinical signs and symptoms (5L), visual observation of the palpebral conjunctiva, and hemoglobin (Hb) level measurement using Point of Care Testing (POCT) devices. Held from April 1st to 8th, 2026, the activity involved the active participation of students and school authorities as an effort toward independent nutritional surveillance. The screening results showed a correlation between subjective symptoms, pale conjunctiva conditions, and Hb measurement results in the field. Changes in students' behavior regarding nutritional intake and the emergence of new awareness among school authorities about the importance of routine check-ups served as indicators of successful social transformation. In conclusion, integrated manual screening is highly effective as a preventive health measure for adolescents within educational environments.

Adolescence is a period of change or transition from childhood to adulthood, encompassing biological, psychological, and social changes. Adolescent girls experience menstruation every month, which puts them at risk of anemia, compounded by poor dietary habits and the failure to consume iron tablets. Rapid adolescent growth is linked to nutritional fulfillment or adolescent consumption of nutrients, one of which is iron consumption. Insufficient iron consumption can lead to anemia in adolescents. Strategies to address anemia in adolescent girls include improving dietary intake and providing iron tablet supplementation. Changing dietary patterns is an important long-term strategy, but cannot be expected to be successful quickly. Anemia is a global health problem, especially in developing countries, where an estimated 30% of the world's population suffers from anemia. Adolescent girls are ten times more likely to suffer from anemia than boys. Efforts to prevent anemia in adolescents through iron tablet supplementation are a strategic, specific intervention to prepare healthy mothers-to-be. The aim was to determine the effect of iron (Fe) tablet administration on increasing Hb levels in adolescent girls with mild anemia. This study was quantitative, with an experimental design. The population in this study were 55 young women at the Ibu Health Center in West Halmahera Regency. A purposive sample of 30 samples was taken. Data collection in this study was carried out by examining Hb levels before and after administering iron tablets 4 times in a row for 4 weeks. The results of the study were that there was no significant difference between Hb levels before and after administering iron tablets in young women at the Ibu Health Center in West Halmahera Regency. The average Hb level before administering iron tablets was 11.5 g/dL, and after administering iron tablets was 12 g/dL. The results of the paired t-test showed a difference before and after administering iron tablets (p value = 0.001), so the test has an effect on administering iron tablets (Fe) on increasing Hb levels in young women with mild anemia in the Ibu Health Center in West Halmahera Regency.

Background: Adolescence is a transitional period from childhood to adulthood, with signs of entering adolescence including physical and psychological changes. The adolescent phase is marked by physiological maturation such as the growth of tissues and body organs. This requires adolescents to have sufficient nutritional intake. If the intake is inadequate, it can lead to disturbances in the body's metabolic processes. Nutrient deficiencies, particularly iron (Fe), can cause nutritional anemia. Low hemoglobin levels can occur due to insufficient nutrient intake from food, especially nutrients that support hemoglobin formation. Objective: The objective of this study is to determine the relationship between hemoglobin levels and BMI scores in female adolescents at SMA N 3 Boyolali. Method: The research design was correlational analytic, with a sample of 76 female students at SMA Negeri 3 Boyolali. The sampling technique used random sampling according to inclusion and exclusion criteria. The research instruments included a digital hemoglobinometer, a digital step-on scale, and a microtoa. Data were analyzed using the Spearman Rank test. Results: Bivariate analysis using the Spearman Rank statistical test showed r = 0.343 with a p-value of 0.002 < 0.05, indicating that Ha was accepted. An r of 0.343 is equivalent to 34.3%, indicating a low strength of association. Conclusion: There is a significant relationship between hemoglobin levels and BMI scores in adolescent girls.

Nutritional problems in adolescents are complex, as evidenced by the high rate of iron deficiency anemia, especially among girls (23%), as well as malnutrition and overnutrition. According to SKI (2023), nutritional problems in adolescents include thinness and extreme thinness reaching 7.6%, while adolescents who are overweight reach 12.1%, and those who are obese reach 4.1%. The objectives are to determine the knowledge of balanced nutrition and eating habits of students in their daily lives and to identify the relationship between knowledge and eating habits with nutritional status. This study used a cross-sectional design with a population of 45 students from the Midwifery Study Program at Harkat Negeri University. The sampling technique used was total sampling. The research instrument was a questionnaire distributed via Google Form, while nutritional status was obtained by measuring BMI. Univariate and bivariate analyses were used. The majority of respondents were aged 20 years (44.5%), had good nutritional knowledge (59.1%), poor eating habits (63.6%), and normal nutritional status (68.2%). In the bivariate analysis, there was no significant relationship between nutritional knowledge and eating habits with the nutritional status of students (p-value >0.05). Conclusion The majority of students had good understanding of nutrition, but not of eating habits. It is hoped that students can maintain eating habits with balanced nutrition in order to achieve normal nutritional status. Keywords: Nutrition Knowledge; Eating Habits; Nutritional Status

Adolescent girls' adherence to taking iron tablets is still lacking, iron intake is very important to prevent anemia. Based on the 2018 Riskesdas, the coverage rate of iron tablets is 76.2%, but the awareness of adolescent girls of the importance of preventing anemia by consuming iron tablets is still low. One way to increase compliance with taking blood supplement tablets is by utilizing peer group education. This study aims to determine the effect of peer group education in an effort to increase adherence to taking blood tablets for adolescent girls. This is a quantitative pre-experimental study using One-Group Pretest-Posttest Design. The population was all students of class XI SMAN 1 Godean. Simple random sampling technique with a sample size of 58 female students. Education time was 40 minutes with peer educators in each group. Data analysis using the Wilcoxon test with the results of compliance with iron tablet consumption before education in adolescent girls at SMA Negeri 1 Godean in the category of non-compliant as many as 51 people (87.9%) and compliant as many as 7 people (12.1%), compliance with iron tablet consumption after education has increased in the category of compliant as many as 16 people (27.6%) and non-compliant as many as 42 people (72.4%). In the Wilcoxon Test, the results obtained p = 0.013, therefore it was concluded that there was an effect of peer group education on increasing compliance with blood supplementation tablet consumption in adolescent girls of SMA Negeri 1 Godean.

Anemia among adolescent girls is one of the health problems that is often overlooked, even though it has serious impacts on learning concentration, productivity, and reproductive health in the future. One of the main causes of anemia is iron deficiency and an unbalanced diet. This community service activity aims to increase adolescent girls’ knowledge about anemia prevention through health promotion using poster media with the approach of “Smart Nutrition for Iron Health.” The activity was carried out at Pesantren Al-Mubarak 12 November 2025, targeting 34 adolescent girls. The method included planning, preparation, implementation, and evaluation stages, with pre-test and post-test conducted to assess participants’ knowledge levels. The results showed a significant increase in adolescents’ knowledge regarding anemia prevention. Before the activity, 55% of respondents had poor knowledge, 35% moderate, and only 10% good. After the intervention, 75% of respondents had good knowledge and 25% moderate, with no respondents in the poor category. These results indicate that poster media is effective in increasing adolescents’ understanding of anemia and the importance of consuming a balanced diet rich in iron as an effort to prevent anemia among adolescent girls.

Background: Sleep disorders in adolescents are a significant health problem, with a global prevalence reaching 57.8% and particularly high rates in several cities in Indonesia. Poor sleep quality negatively impacts physical health, such as the risk of cardiovascular disease and anemia, as well as mental and cognitive health. Sleep behavior is influenced by a dynamic interaction between personal and environmental factors, as explained in Social Cognitive Theory (SCT). Research Objective: To identify the determinants of sleep deprivation in adolescents, specifically individual and environmental factors, based on a Social Cognitive Theory (SCT) perspective through a literature review from 2019 to 2025. Method: This study utilized a literature review. To obtain research data, the authors searched for scientific articles through Google Scholar, PubMed, and ScienceDirect databases, then analyzed 10 articles that met the inclusion criteria, published between 2020 and 2025. Results: Factors significantly associated with adolescent sleep quality were identified, with individual factors being the most dominant determinant (found in 7 studies), including academic stress and smartphone addiction. Furthermore, a positive association was found with environmental factors (found in 4 studies), such as bright lighting, noise, and uncomfortable room temperature. Conclusion: Within the framework of Social Cognitive Theory, adolescent sleep quality is the result of a reciprocal interaction between personal factors (perceived stress and self-control over gadgets), the physical environment, and sleep behavior. Individual factors such as stress and nighttime gadget use reduce self-efficacy for regular sleep, which is exacerbated by an unfavorable environment.

Anemia is one of the most common nutritional problems in the world and is mainly caused by iron deficiency. In Indonesia, the prevalence of anemia among adolescents remains high, especially in adolescent girls who have greater iron requirements due to growth and menstruation. Low levels of knowledge, unbalanced dietary patterns, and poor adherence to iron supplementation are the main factors contributing to anemia in this group. Therefore, efforts to increase knowledge through health education activities are needed. This Community Service activity aimed to increase the knowledge of adolescent girls about anemia prevention through improving iron intake and adopting a healthy lifestyle. The activity was carried out in Bongohulawa, Limboto District, Gorontalo Regency, on November 3, 2025, involving 40 adolescent girls. The methods used included health education, interactive discussions, demonstrations, and distribution of educational media. Evaluation was conducted using a pre-test and post-test. The pre-test results showed that only 25% of participants had good knowledge, while 45% had moderate knowledge and 30% had poor knowledge. After the educational intervention, the percentage of participants with good knowledge increased to 75%, moderate knowledge decreased to 20%, and poor knowledge decreased to 5%. It can be concluded that this educational activity was effective in increasing adolescent girls’ knowledge of anemia prevention and the importance of iron intake and a healthy lifestyle as early preventive measures.

Anemia is one of the most common nutritional problems in the world and is mainly caused by iron deficiency. In Indonesia, the prevalence of anemia among adolescents remains high, especially in adolescent girls who have greater iron requirements due to growth and menstruation. Low levels of knowledge, unbalanced dietary patterns, and poor adherence to iron supplementation are the main factors contributing to anemia in this group. Therefore, efforts to increase knowledge through health education activities are needed. This Community Service activity aimed to increase the knowledge of adolescent girls about anemia prevention through improving iron intake and adopting a healthy lifestyle. The activity was carried out in Bongohulawa, Limboto District, Gorontalo Regency, on November 3, 2025, involving 40 adolescent girls. The methods used included health education, interactive discussions, demonstrations, and distribution of educational media. Evaluation was conducted using a pre-test and post-test. The pre-test results showed that only 25% of participants had good knowledge, while 45% had moderate knowledge and 30% had poor knowledge. After the educational intervention, the percentage of participants with good knowledge increased to 75%, moderate knowledge decreased to 20%, and poor knowledge decreased to 5%. It can be concluded that this educational activity was effective in increasing adolescent girls’ knowledge of anemia prevention and the importance of iron intake and a healthy lifestyle as early preventive measures.

Adolescents are a vulnerable age group to nutritional problems due to increased nutritional requirements during periods of rapid growth. Suboptimal nutritional status, including undernutrition and anaemia, can negatively affect health and academic performance. This study aimed to describe the nutritional status of adolescents at SMA Negeri 2 Kendari, Southeast Sulawesi Province. This study employed a descriptive observational design conducted from August to September 2025 with a total sample of 226 twelfth-grade students’ selected using proportionate stratified random sampling. Data were collected through measurements of body weight and height to determine nutritional status based on the BMI-for-Age indicator and haemoglobin levels were assessed using a digital haemometer. Data were analyzed using univariate analysis. The results showed that most respondents had normal nutritional status (52.2%), while a considerable proportion were undernutrition (47.8%). In addition, more than half of the respondents were anaemia (50.9%). These findings indicate that although anthropometric nutritional status was generally normal, anemia remains a health problem that requires attention among adolescents. Regular monitoring of nutritional status and hemoglobin levels accompanied by nutrition education is recommended. Further studies are recommended to use an analytical study design to identify factors associated with nutritional status and anaemia.

Iron Deficiency Anemia is a common health problem among adolescents, particularly females, and is associated with decreased concentration, fatigue, and reduced academic performance. This community service program aimed to increase students’ awareness and knowledge regarding early detection of anemia symptoms (5L) and the adoption of iron-rich dietary practices. The intervention was conducted through interactive health education sessions involving lectures, discussions, and questions and answers with 30 students of MAN Batubara. The results indicated an improvement in students’ understanding of anemia symptoms, early behavioral changes in choosing iron-rich foods, and the emergence of local student leaders who supported peer awareness. This participatory educational approach proved effective in enhancing nutritional literacy and collective awareness toward anemia prevention among adolescent

Anemia is a global health problem affecting approximately 30% of adolescents worldwide, with the highest prevalence among women aged 15-49. In Indonesia, data from the Ministry of Health in 2019 showed that the prevalence of anemia in adolescent girls reached 32%, with cases higher than in adolescent boys (27.2% vs. 20.3%). Anemia in adolescent girls negatively impacts growth, increases susceptibility to infection, and affects concentration and academic performance. Research Methods This study aims to evaluate the effectiveness of pandan leaves (Pandanus amaryllifolius Roxb.) as a dietary intervention to control anemia in adolescent girls. This quantitative study used a pre-experimental one-group pretest-posttest design with 19 adolescent girls from MA Bahrul Ulum Lamongan. The sample was selected using a purposive sampling technique. Respondents consumed 100 grams of pandan leaf pudding daily for seven days. The results of statistical analysis using the Paired Samples T-Test showed that there was a significant difference in hemoglobin levels (p <0.05) in respondents before and after consuming pandan leaf pudding. These results indicate that consuming pandan leaf pudding is effective in increasing hemoglobin levels in the study group.

Menstrual cycle abnormalities are one of the reproductive health problems that are commonly experienced by adolescent girls, especially in the early days after menarche. These disorders can affect quality of life, including discomfort during activities, risk of anemia, and potential fertility disorders. A preliminary study at SMA Negeri 4 Pandeglang showed that 7 out of 10 grade XI students experienced menstrual cycle abnormalities, while there was no special program related to reproductive health in schools. This study aims to analyze factors related to menstrual cycle abnormalities, namely stress levels, diet, and physical activity. The research design used was quantitative with a Cross Sectional approach, involving 70 respondents who were selected through the Purposive Sampling technique. Data collection was carried out through a structured questionnaire and analyzed using the Chi-Square statistical test. The results of the analysis showed that there was a significant relationship between stress (p=0.011), diet (p=0.021), and physical activity (p=0.015) with menstrual cycle abnormalities. These findings confirm the importance of educational interventions in the school setting to improve adolescents' understanding of reproductive health and encourage healthy lifestyles. This research is expected to be the basis for the development of more comprehensive promotive and preventive programs in supporting the welfare of adolescent girls.

Anemia is a global health problem with a high prevalence among adolescents, especially girls, due to increased iron requirements, rapid growth, and menstruation. This condition impacts health, concentration, and quality of life. Hemoglobin, as an indicator of anemia, plays a crucial role in oxygen transport, so adolescents' understanding of its function is crucial. This activity aims to increase adolescents' understanding of the role of hemoglobin and anemia prevention through health education at SMK Negeri 10 Garut. The method used was a participatory approach through an initial questionnaire, material delivery, discussion, and post-education evaluation. The results showed an increase in students' knowledge about anemia and hemoglobin. This education effectively increases adolescents' awareness and motivation to improve their diets, so it needs to be implemented continuously with the support of schools, parents, and health workers.

Anemia is a public health problem widely experienced by adolescents, particularly in developing countries, including Indonesia. Low levels of knowledge about anemia contribute to its high prevalence. This study aimed to determine the effectiveness of educational videos in improving knowledge about anemia among adolescents at SMP Plus At-Thoiba Pekanbaru. This research employed a quasi-experimental design with a one-group pretest-posttest approach. The population consisted of all eighth-grade students at SMP Plus At-Thoiba Pekanbaru, totaling 17 respondents, selected through total sampling. The instrument used was an anemia knowledge questionnaire. Data were analyzed using the Wilcoxon Signed Rank Test due to non-normally distributed data. The results showed an increase in the mean knowledge score from 9.59 before the intervention to 12.41 after the intervention. The Wilcoxon test yielded a p-value of 0.000 (p < 0.05), indicating a significant difference between pretest and posttest scores. A total of 94.1% of respondents experienced an increase in knowledge after watching the educational video. The study concludes that educational videos are effective in increasing adolescents’ knowledge about anemia. This medium can serve as an appropriate alternative in school health promotion programs to prevent anemia among adolescents.  

Based on Indonesia's 2021 health profile, the coverage of iron supplementation (IBT) for adolescent girls in Indonesia, North Maluku ranks lowest among all provinces in Indonesia, at 2.1%, and West Sumatra province, at 11.5%, ranks 29th out of 34 provinces. The province with the highest percentage of iron supplementation coverage for adolescent girls (Ministry of Health, 2021). Anemia is a common health problem among adolescent girls. Many adolescent girls still face the dangers of anemia in Padang City. There is a risk of anemia in 193 adolescent girls, according to the Padang City Health Office's screening of grade X female high school, vocational high school, and Islamic high school students in 2021. The Padang Community Health Center's work area has the highest risk of anemia in adolescent girls, namely 96 people and a percentage of 21.91%. Screening conducted at the Padang Community Health Center workplace in 2021 found that SMKN 9 Padang had the highest risk of anemia in adolescent girls with 25 confirmed cases and a percentage of 26.31%. The purpose of this study was to determine the Overview of the Level of Knowledge of Grade X Female Adolescents About Anemia at SMK N 9 Padang City in 2025.This type of research is "analytical descriptive" with a cross-sectional design. This research was conducted in February-March 2025 at SMK Negeri 9 Padang. The population of this study was all grade X students totaling 164 respondents at SMK Negeri 9 Padang. The sampling technique was simple random sampling with a sample size of 63 respondents.The results of the SPSS data processing showed that adolescents had good knowledge (9.5%), sufficient knowledge (25.4%), and insufficient knowledge (65.1%). The information sources were assessed from the internet (88.9%), books (1.6%), family (1.6%), friends (3.2%), and school (4.8%).

The number of school-age adolescent girls in Banggai Regency, Central Sulawesi, still faces serious challenges related to nutritional problems such as anemia and chronic energy deficiency (SEZ). Low nutritional literacy and unbalanced food consumption habits also worsen their nutritional status, especially during puberty when nutritional needs increase significantly. This service activity aims to increase the understanding and awareness of young women on the principles of balanced nutrition through a participatory educational approach. The implementation of the activity was carried out at SMP Negeri 2 Bunta, Simpang Raya District, involving 30 students in grades VII and VIII as well as UKS supervisory teachers. The intervention included providing material on "Fill My Plate", the 4 pillars of balanced nutrition, and the risk of nutritional disorders in adolescents. The material was delivered in the form of interactive counseling using leaflet media, accompanied by knowledge measurement through pre-test, post-test, and one-week post-activity evaluation. The results of the activity showed a significant increase in students' understanding of the principles of balanced nutrition, with the knowledge score of the good category increasing from 40% to 87%. Most of the participants were able to mention the composition of the meal portion, the importance of breakfast, restrictions on fast food consumption, and the need to drink enough water every day. This activity also has an impact on increasing the capacity of teachers in assisting and monitoring the health status of students through the UKS program. Teachers become more active in conducting periodic counseling and recording the nutritional development of female students on a regular basis. School-based balanced nutrition counseling has been proven to be effective in improving adolescent nutritional literacy. This educational model can be replicated in other regions with cross-sectoral support such as education offices, health centers, and village governments, to support the achievement of sustainable development goals in the health sector.