Why should we study the source of exposure?

Why should we study the source of exposure?

One of the promises of the Human Genome Project is that it can revolutionize our understanding of the underlying causes of disease and help develop more preventive and therapeutic approaches to disease. Unfortunately, genetics accounts for only about 10% of the disease, and the rest seem to come from environmental reasons. Therefore, to understand the cause and ultimately prevent disease, it is necessary to study environmental reasons.