One of the adolescent health problems that are the focus of the government is the prevention of anemia in adolescent girls. Based on a preliminary survey conducted at SMK N 1 Bakauheni, 20 students surveyed found 13 BMI students in the thin category who had anemia as many as 9 children. The purpose of this study was to determine the relationship between Body Mass Index and Hemoglobin Levels in Adolescent Girls at SMK N 1 Bakauheni South Lampung. This research method is quantitative with a cross sectional approach. The number of samples is 71 people with the sampling technique used is simple random sampling. From the test results using the Chi Square test, a significance value of 0.000 was obtained (p value 0.05). There is a relationship between body mass index and hemoglobin levels in adolescent girls at SMK N 1 Bakauheni, Lampung Selatan in 2022
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