TITLE: Relationship between Weight Pre-Pregnancy and Weight Gain during Pregnancy with Preterm Birth

Abstract

Worldwide alarming increase of obesity prevalence has led the WHO to take into consideration as one of the most serious global health problems of the 21st century. 40% of women worldwide are overweight. The leading causes of obesity prevalence in women more often becaouse during pregnancy and before pregnancy they gain excess weight. The rapid increase of obesity prevalence especially among women in the World cause women begin pregnancy overweight or obese and this can cause problems about pregnancy and birth. One of the most important of these problems are the threat of premature birth. Each year it is estimated that 15 million babies born before 37 weeks and it is increasing day by day. The relationship between weight gain during pregnancy of preterm birth and weight before pregnancy are discussed in the literature.Some studies suggest that obesity or less weight than usual increases the risk of preterm birth and some suguggest it is not affect. Two studies done with 4735 and 8266 women shows that overweight and obesity increase the risk of preterm birth. As a result, despite efforts to reduce preterm birth, prematüre birth and infant mortality rate leads to an increase in morbidity and the incidence is increasing. İt is thought that one of the most important cause of preterm birth balancing BMI prepregnancy and during pregnancy contribute positively maternal and neonatal outcomes. Pregnancy is not a good time to lose weight. Predicted weight gain during pregnancy should be set at the begining of the monitoring.