According to a study in Lund University Indian women are younger and leaner than Swedish women when they develop gestational diabetes. The researchers also found a gene that increases the risk of gestational diabetes in Swedish women but which on the contrary turned out to have a protective effect in Indian women. Researchers say that in gestational diabetes there is not enough insulin production and insulin secretion in the body during pregnancy. The prevalence differs between different populations and can partly be explained by lifestyle and genes they say and add that the purpose of the study was to investigate