There are many people at my school who seem to take the public health/health policy route while remaining pre-med. Some of them do research on healthcare policy, rural & primary care, etc. How relevant would such research be to demonstrating interest in medicine? For example, how public health research compare to biochemistry research? Are both useless for demonstrating actual interest in medicine? Is it better to focus on things like finding opportutnities for patient interaction in a clinical setting, non-medical volunteering for poor and underserved populations, etc.?