Effect of Soybean Juice on the Increase in Hemoglobin Levels among Adolescent Girls

The highest percentage of anemia occurs among adolescent girls, and one of the efforts to overcome such problem is iron supplementation along with iron-rich foods from animal sources such as red meat and marine products, as well as vegetable sources such as nuts. Soybean is a kind of iron-rich food which contains 8.0/100 g of iron. This study aims to observe the increase in hemoglobin levels after the administration of soybean juice among adolescent girls. This was a pre-experimental study with a one group pretest-posttest design. The populations consisted of 133 adolescent girls of VII and VIII graders with a sample size of 35 respondents who were selected by using purposive sampling technique. The respondents were given 250 ml of soybean juice for 21 consecutive days every morning. On the twenty-second day, the Hb levels of respondents were re-assessed (post-test). The blood sample taken was a capillary blood at the fingertip. The statistical test applied the Paired T-Test. The results revealed that hemoglobin levels of respondents who were given soybean juice increased by 12.06 g/dl with a difference of 1.62 g/dl. This study concluded that 250 ml soybean juice had an effect on the hemoglobin levels among adolescent girls. Adolescents are recommended to regularly consume iron-rich foods and beverages with various kinds of preparations such as soybean juice. Jumlah anemia terbesar terjadi pada remaja perempuan, dan salah satu upaya untuk mengatasi masalah tersebut yakni perlunya suplemen zat besi, dan makanan sumber zat besi yakni sumber hewani seperti daging merah, produk laut dan sumber nabati seperti kacang-kacangan. Kacang kedelai merupakan sumber makanan yang memiliki kandungan gizi lengkap dimana memiliki kandungan zat besi 8,0/100 gr. Tujuan penelitian untuk melihat peningkatan kadar Hb setelah diberikan intervensi jus kedelai pada remaja perempuan. Metode penelitian: Pre eksperiment dengan rancangan pre test-post test. Populasi remaja putri kelas VII dan VIII berjumlah 133 orang dengan sampel 35 orang diberikan jus kedelai, dengan teknik purposive sampling. Uji Statistik yang digunakan ialah Uji Paired T Test. Hasil penelitian: Kadar Hb responden yang diberikan jus kacang kedelai meningkat sebesar 12,06 gr/dl dengan selisih 1,62 gr/dl. Kesimpulan: Jus kedelai 250 ml berpengaruh terhadap jumlah hemoglobin remaja putri. Disarankan bagi remaja untuk rutin dan teratur mengkonsumsi makanan dan minuman yang kandungan zat besinya tinggi seperti kede