病原体侵入机体，消弱机体防御机能，破坏机体内环境的相对稳定性，且在一定部位生长繁殖，引起不同程度的病理生理过程课前朗读Itissaidthattheincidence(发生率)ofheartdiseaseislowerincountrieswherepeopleeatmorefish.Thatsthefindingofarecentstudyinwhichdeathsfromheartdiseasewere50%loweramongpeoplewhoateatleastanounce(盎司)ofsaltwaterfisheveryday,comparedtothosewhoneveratefish.Therearefewerheartdiseasedeaths,forexample,amongtheJapanese,whosedailyfishconsumptionaverages3ounces.Theresearch,whichiscarriedoutbytheDutchmen,isoneofthreehumanstudiesthattrytofindscientificeviden
