Many students ask whether they should be involved in research. Research is just one of the many ways that you can enrich your educational experience and contribute towards making you a well-rounded person. It is an opportunity to get close to a faculty member, who can potentially write you a strong letter of recommendation.
Only do research in science if you are truly interested in the science side of health care. You could choose instead to do research in the humanities or social sciences for example. Medical schools do not expect that you will have done research; many successful candidates have not. But if you choose to do research, do it because you care about the research question. Be sure that you are prepared to discuss the research knowledgeably in an interview.