Undergraduate / ApplyTexas Common App - can I write about a medical phenomenon? [3]

Hi, I am currently writing my ApplyTexas essay B which is..

Topic B: Choose an issue of importance to you-the issue could be personal, school related, local, political, or international in scope-and write an essay in which you explain the significance of that issue to yourself, your family, your community, or your generation.

My question is that can I write about a medical phenomenon that will have implications to everyone in the future, for example stem cell research or something along those lines?