RESUMEN
Background: ABO blood group is the most important of all blood group systems. A and B antibodies are present naturally in individuals from birth who lack the corresponding antigen on their red cells. Aims and Objective: The main aim of this study was to find out that whether there is any association between ABO blood group and body mass index (BMI) or there is no association between ABO blood group and BMI. Material and Methods: This is a cross-sectional study which was conducted in the Department of Physiology Of IIMSR, Lucknow in collaboration with department of Medicine. Data collection was done over a period of 6 months and a sample size came out to be 384 Anthropometric parameters were recorded using a standardized scale and blood group sampling was done in department of physiology using slide agglutination method. Data were analyzed using SPSS version 17.0. Result: Blood group distribution of individuals with normal BMI was 6.7% with O negative, 3.6% with O positive, 5.4% with A negative, 4.1% with A positive, 6.5 % with B negative, 2.8 % with B positive, 10.4% with AB negative, and 8.3% with AB positive. Conclusion: A significant association was found between the blood groups and obesity. The individuals with blood groups A and AB are more likely to develop obesity than the individuals with blood group O.