When you fill out your AMCAS application, you will be asked to include your parent's occupation and level of education.  Remember to fill this section out.

Why is it important for the admissions committee to know this information?  To get a sense of the overall applicant, it is important for the committee to know what kind of household you grew up in ad what influences you had growing up that lead you to decide to apply for medical school.  If your parents are not physicians or only received a high school degree, then it could be looked favorably upon by committee members who view your motivation to pursue medicine as your own and not your parents.

Also, if both your parents are physicians, then you can not slack and think that just because you live with two doctors, that you know what being a physician is like.  You need to make an extra effort to show that you did pursue clinical experiences.  It should be easy for you since you can shadow your parent's coworkers in the hospital. Make sure you get letter of recommendations from them as well.