Hereditary the study of disease transmission is a field of study that consolidates standards from hereditary qualities and the study of disease transmission to comprehend the jobs of hereditary and ecological elements in deciding wellbeing and illness designs in populaces. It aims to learn about diseases-causing genetic variants, how they interact with environmental exposures, and how to use this information to improve public health. All diseases are included in modern genetic epidemiology, regardless of whether they are widespread and intricate or supposedly simpler, like the so-called monogenic (single-gene) disorders. Numerous advancements in the epidemiology of genetic diseases have involved seemingly straightforward inherited conditions (such as sickle cell disease and cystic fibrosis).