Wasting merupakan bentuk kekurangan gizi yang merepresentasikan berat  badan balita kurus berdasarkan tinggi badan. Kejadian wasting umumnya merupakan akibat dari asupan gizi yang tidak adekuat, baik dari segi kuantitas maupun kualitas makanan, dan/atau karena anak sering mengalami penyakit infeksi. Di antara seluruh masalah gizi pada anak, wasting memiliki risiko kematian tertinggi. Risiko kematian pada anak yang mengalami wasting adalah 12 kali lebih besar dibandingkan anak dengan status gizi baik. Tujuan umum pada penelitian ini adalah untuk mengetahui gambaran dan faktor risiko kejadian wasting pada balita usia 0-59 bulan di DKI Jakarta tahun 2024. Penelitian ini menggunakan data sekunder dari SSGI 2024 dengan desain studi cross sectional dan metode stratified two stage sampling. Jumlah sampel dalam penelitian ini terdiri dari 3476. Analisis data yang digunakan adalah chi-square. Hasil penelitian didapatkan 7,7% balita mengalami wasting. Hasil bivariat didapatkan terdapat hubungan yang bermakna antara riwayat diare (p value 0,014), kunjungan ANC (p value 0.020), dan pemberian makanan tambahan (p value 0,001) dengan kejadian wasting pada balita usia 0-59 bulan di DKI Jakarta tetapi tidak terdapat hubungan yang bermakna dengan usia balita, jenis kelamin balita, Riwayat ISPA, Riwayat pneumonia, Riwayat TBC, ASI eksklusif, status imunisasi, IMD, kepemilikan buku KIA, dan sumber air minum.

Wasting is a form of undernutrition characterized by low weight-for-height in children under five years of age. Wasting is generally caused by inadequate nutritional intake, both in terms of the quantity and quality of food consumed, and or frequent infectious diseases. Among all forms of child malnutrition, wasting carries the highest risk of mortality. Children with wasting are 12 times more likely to die than children with normal nutritional status. The general objective of this study was to describe the prevalence and identify the risk factors associated with wasting among children aged 0–59 months in DKI Jakarta in 2024. This study used secondary data from the 2024 Indonesian Nutritional Status Survey (SSGI) and employed a cross-sectional study design with a stratified two-stage sampling method. A total of 3,476 children were included in the analysis. Data were analyzed using the chi-square test. The results showed that 7.7% of children under five were affected by wasting. Bivariate analysis revealed significant associations between a history of diarrhea (p = 0.014), antenatal care (ANC) visits (p = 0.020), and supplementary feeding (p = 0.001) and the incidence of wasting among children aged 0–59 months in DKI Jakarta. However, no significant associations were found between wasting and the child's age, sex, history of acute respiratory infection (ARI), history of pneumonia, history of tuberculosis (TB), exclusive breastfeeding, immunization status, early initiation of breastfeeding (EIBF), ownership of a Maternal and Child Health (MCH) handbook, or source of drinking water.