§Macroscopic
studies of large populations
úLike population of Okinawa
§Large
population cohort studies
úFollow thousands of people for 10-30 years
§Controlled
clinical trials
úShort, very expensive, specialized for drugs
§Animal
experiments
úMice and rats live 2-3 years, very good models
§In-vitro and
in-vivo studies of cell populations
úThousands of such studies, very specialized
§Synthesis and
review studies
úPut together results from many studies in
interpretative frameworks