2、itain.Fortyyearsago,hewasinvolvedinthefirststudytoexploretheeffectsofaspirinonthepreventionofheartdisease.Elwood’steamexamined47studiesforevidencethataspirinhelpedcancerpatients.Theyfoundthere’sfairlyconsistentevidenceofa15to20percentreductionindeathandareductionincancer’sspread,bylowdose(剂量) as