The birth weight of a newborn is an important issue, as it plays a significant role in infant/child mortality and also has important health implications in growth and development of individuals.1 Birth weight has been shown to be an index of intrauterine growth and a reliable predictor of child survival and mental development.23 There are numerous research studies regarding the factors that determine birth weight.4-10 Factors such as weight gain maternal, smoking, alcohol consumption, gestational age, maternal anthropometry and many other variables have all been the subject of numerous scientific articles. The World Health Organization defines normal birth weight between 2500 and 4000 grams. In recent years, however, low birth weight (4,000 g)12 has been shown to have a significantly lower association with infant mortality, likely due to medical advances in managing this condition.13 It has been documented that the Smoking reduces birth weight. The mechanism for this is hypothesized to be due to tobacco-induced loss of appetite, resulting in reduced maternal nutrition and subsequent low birth weight.14 Many other socio-biological factors that influence birth weight include maternal age, l maternal education, the sex of the child, prenatal care. , marital status, socioeconomic status, genetic factors, and place of residence 2The objectives of this study were to determine the factors that influence birth weight and to determine which of these factors can be used to estimate birth weight. The objectives were to ascertain the individual effect of each of these factors and their effect on the group. This is an important research question and the findings of the...... half of the article ......t on alcohol and caffeine consumption during pregnancy. Am J Epidemiol 1993; May 1;137(9):941-50.24. Sulaiman ND, Florey CD, Taylor DJ, Ogston SA. Alcohol consumption in Dundee primigravidas and its effects on pregnancy outcome. Brother Med J (Clin Res Ed) 1988; May 28;296(6635):15.00-3.25. LETAMO G, MAJELANTLE R. FACTORS AFFECTING LOW BIRTH WEIGHT AND PREMATURITY IN BOTSWANA. J Biosoc Sci 2001;33(03):391-403.26. Reichman NE, Teitler JO. Paternal age as a risk factor for low birth weight. Am J Public Health 2006; May;96(5):862-6.27. Gillman MW, Rifas-Shiman S, Berkey CS, Field AE, Colditz GA. Maternal gestational diabetes, birth weight, and adolescent obesity. Pediatrics 2003; March 1;111(3):e221-226.28. Hypponen E, Smith GD, Power C. Parental diabetes and offspring birth weight: an intergenerational cohort study. BMJ 2003; January 4;326(7379):19-20.