Contribution of Fast Food Consumption on Incidence Early Puberty Among Adolescent Girls Azrimaidaliza 1 , Rauza Sukma Rita 2 , Fitri Nia 3 {azrimaidaliza@ph.unand.ac.id 1 , rauzasukmarita@med.unand.ac.id 2 , fitrinia25@gmail.com 3 } Nutrition Department, Andalas University, Padang, West Sumatera, 25127, Indonesia Abstract. The age at menarche is varied among adolescent girls. Early puberty is at increased risk of a physical and psychosocial problem. The objective of the study was to determine the association of fast food consumption with early puberty among adolescent girls.A cross-sectional design was used to conduct the study with total samples of 159 adolescents girls. Primary data were obtained by interviews using the standardized questionnaires. Statistical analysis was described by univariate and bivariate analysis. The incidence of early puberty was 23,3% with the average of age at menarche was 12,6±0,70 years old. There was a significant association of age at menarche with protein intake (p- value=0,0001), fat intake (p-value=0,0001) and fast food frequency (p=0,0001). Adolescents girl who consumed fat and protein from fast food more than 30% and had a frequency of fast food more than 8 times a week with 3-4 types of fast food might be at risk to increase of early puberty. The age at menarche is associated with protein and fat of fast food consumption, besides the role of frequency of fast food. Balanced diet was needed to maintain adolescent girls health. Keywords: Adolescents Girls, Fast Food Consumption, Frequency, Age at Menarche. 1 Introduction Nutritional needs during adolescence are increased because of the increased growth rate and changes in body composition associated with puberty [1]. Early puberty among girls is associated with the risk of anemia in the short term and increasing of the risk of degenerative disease in the long term, including breast, ovarian and endometrial cancers, type 2 diabetes, hypertension and cardiovascular disease [2], also facing the psychosocial problems [3] than average puberty. Based on a national survey in Indonesia year 2010, half of girls teenager have experienced menarche at age 12 years old. Early puberty was described as early sexual maturation [4]. However, many factors have been proved to be associated with early puberty among adolescent girls, namely nutritional status [5], nutrient intake, hormonal, exposure of mass media and lifestyle, such as fast food consumption [6]. Many factors influence the consumption of fast foods. The ease of availability and purchase is one among them [7]. There was not much data about the dietary pattern which was linked with fast food habits among adolescent girl and early puberty in Western Province in Indonesia. The objective of the study was to determine the association of fast food consumption with early puberty among adolescent girls. ICOMHER 2018, November 13-14, Padang, West Sumatera, Indonesia Copyright © 2019 EAI DOI 10.4108/eai.13-11-2018.2283531