What do genetic counselors do? While many have heard about genetic counselors, most have no idea what they do. Let’s look at the important role they play in the healthcare system and communities and how they can be utilized more often. Genetic counselors are used mostly during pregnancy, and they look at other genes and map out genomes that will affect one’s health and future. Then they educate patients with the next steps to help create a plan that will best benefit their health.