Diversity: Disease Preventive of Research Integrity Volume 3, Issue 2, 2023 Page 53-59 doi: 10.24252/diversity.v3i2.35909 ©2023 The Authors This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by-nc-sa/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. p-ISSN : 2774-9649 e-ISSN : 2775-0035 Uncovering the Determinants of Birth Weight: An Investigation on Pregnant Women in Makassar City Memahami Faktor Penentu Berat Badan Lahir Bayi: Studi pada Ibu Hamil di Kota Makassar Ria Q. Arief* 1 , Karmila Sarih 2 , Nur U. Mahmud 3 1 Department of Nutrition, Faculty of Psychology and Health, Universitas Islam Negeri Sunan Ampel, Surabaya, Indonesia 2 Unit Pelatihan, Sertifikasi, dan Pelayanan, UPT Pelatihan Kesehatan, South Sulawesi Provincial Health Office, Makassar, Indonesia 3 Department of Public Health, Faculty of Public Health, Universitas Muslim Indonesia, Makassar, Indonesia Abstract Birth weight is an essential indicator in assessing a baby's health and a factor that affects the baby's long-term health. This study aimed to determine the relationship between the Body Mass Index (BMI), Hemoglobin levels, and Blood Pressure of mothers during pregnancy and to birth weight of the baby. The study used a cross-sectional survey of a group of mothers who gave birth in Makassar. The data on mothers during pregnancy was the maternal history recorded in the mother and Child Health Book (KIA). And the data on the birth weight of the baby was also from the KIA book with the support of secondary data from the Community Health Center and Midwife. The results showed that 41.7% of the low-birth-weight babies had mothers who experienced underweight during pregnancy, 83.3% of the low-birth-weight babies had mothers who experienced Anemia during pregnancy, and 66.7% of the low-birth-weight babies had mothers who experienced hypertension during pregnancy. There was a significant and close relationship between the mother's BMI, Hemoglobin levels, and Blood Pressure to the baby's birth weight. There was a meaningful relationship between the mother's Body Mass Index, Anemia, and Hypertension during pregnancy to low birth weight. Therefore, it is important to maintain a good quality of nutrition for mothers both before and during pregnancy, following Islamic teachings that Allah SWT has decreed for every pregnant woman a thousand good deeds every day and erases a thousand misdeeds as motivation to remain strong throughout the pregnancy process. Abstrak Berat badan lahir merupakan indikator penting dalam menilai kesehatan bayi dan faktor yang mempengaruhi kesehatan jangka panjang bayi. Penelitian ini bertujuan untuk mengetahui hubungan Indeks Massa Tubuh (IMT), Kadar Hb, dan Tekanan Darah ibu selama masa kehamilan terhadap berat badan lahir bayi. Penelitian ini menggunakan metode crossectional study pada kelompok ibu yang telah melahirkan di Kota Makassar, data ibu saat hamil merupakan data riwayat kehamilan ibu yang tercatat dalam buku KIA (Kesehatan Ibu dan Anak). Dan data berat badan lahir anak juga dari buku KIA dengan dukungan data sekunder dari Puskesmas dan Bidan. Hasilnya menunjukkan sebesar 41,7% bayi yang BBLR memiliki ibu yang mengalami underweight saat masa kehamilan berlangsung, sebesar 83,3% bayi yang BBLR memiliki ibu yang mengalami Anemia saat masa kehamilan, dan sebesar 66,7% bayi yang BBLR memiliki ibu yang mengalami hipertensi saat masa kehamilan berlangsung. Dan adanya hubungan erat yang signifikan terhadap masing-masing IMT, kadar Hb, dan tekanan darah ibu terhadap berat badan lahir bayi. kaitan yang signifikan antara IMT, kondisi anemia, dan hipertensi ibu hamil dengan Berat Badan Lahir Rendah (BBLR). Oleh karena itu, penting untuk menjaga kualitas gizi ibu baik sebelum maupun selama hamil, sesuai dengan anjuran islam untuk wanita hamil bahwa Allah SWT menetapkan baginya setiap hari seribu kebaikan dan menghapuskan seribu kejelekannya sebagai motivasi untuk tetap kuat dalam menjalani proses kehamilannya. Graphical Abstract Keyword anemia; birth weight; body mass index; child; pregnant women Artikel History Submited : 03 February 2023 In Reviewed : 06 February 2023 Accepted : 14 February 2023 Published : 17 February 2023 Correspondence Address : Jl. Ahmad Yani, Kelurahan Jemur Wonosari, Kecamatan Wonocolo No. 117, Surabaya Email : ria.qadariah@gmail.com