Latar Belakang: Kekurangan energi kronik (KEK) merupakan salah satu masalah gizi yang masih banyak terjadi dikalangan remaja putri. Kejadian KEK di Jawa Tengah ini tergolong lebih tinggi dan terbesar kedua di Pulau Jawa dibandingkan kasus KEK nasional dengan prevalensi 18,2% yang mana banyak dialami oleh remaja.
Tujuan: Mengetahui hubungan asupan seng, asupan zat besi dan body image pada remaja putri di SMK N 7 Kendal.
Metode: Pengukuran asupan seng dan zat besi menggunakan kuesioner SQ-FFQ, body image menggunakan kuesioner Figure Rating Scale (FRS) dan kekurangan energi kronik melalui pengukuran Lingkar Lengan Atas (LILA). Desain peneitian ini menggunakan analitik observasional dengan pendekatan cross sectional yang melibatkan 73 siswi dipilih secara stratified random sampling. Analisis statistik dilakukan melalui uji gamma dan regresi logistik biner pada program aplikasi SPSS.
Hasil: Hasil penelitian menunjukkan bahwa mayoritas responden memiliki asupan seng kurang sebanyak 37 siswi (50,7%), asupan zat besi kurang yaitu 38 siswi (52,1%), body image negatif sebanyak 45 siswi (61,6%) dan mayoritas mengalami KEK yaitu 40 siswi (54,8%). Berdasarkan hasil uji gamma menunjukkan terdapat hubungan asupan seng (p<0,001), asupan zat besi (p<0,001) dan body image (p=0,008). Asupan zat besi merupakan faktor paling berpengaruh terhadap kekurangan energi kronik pada penelitian ini dengan nilai OR sebesar 0,038 kali dan p<0,001.
Kesimpulan: Terdapat hubungan asupan seng, asupan zat besi dan body image dengan kekurangan energi kronik. Variabel yang paling berpengaruh terhapat kekurangan energi kronik pada SMK N 7 Kendal yaitu asupan zat besi.

ABSTRACT:
Backgorund: Chronic energy deficiency (CED) is one of the nutritional problems that still occurs a lot among adolescent girls. The incidence of CED in Central Java is relatively higher and the second largest in Java compared to national CED cases with a prevalence of 18,2% which is mostly experienced by adolescents.
Objective: The purpose of this study was to determine the relationship between zinc intake, iron intake and body image in female adolescents at SMK N 7 Kendal.
Method: Measurement of zinc and iron intake using the SQ-FFQ questionnaire, body image using the Figure Rating Scale (FRS) questionnaire and chronic energy deficiency through measurement of the Upper Arm Circumference (LILA). The design of this study used observational analytics with a cross-sectional approach involving 73 female students selected by stratified random sampling. Statistical analysis was carried out through the gamma test and binary logistic regression in the SPSS application program.
Results: The results of the study showed that the majority of respondents had insufficient zinc intake of 37 students (50,7%), insufficient iron intake of 38 students (52,1%), negative body image of 45 students (61,6%) and the majority experienced KEK of 40 students (54,8%). Based on the results of the gamma test, there was a relationship between zinc intake (p <0.001), iron intake (p <0,001) and body image (p = 0,008). Iron intake was the most influential factor on chronic energy deficiency in this study with an OR value 0,038 times and p<0,001
Conclusion: There is a relationship between zinc intake, iron intake and body image with chronic energy deficiency. The most influential variable on chronic energy deficiency at SMK N 7 Kendal is iron intake.