The scientific view of what determines a life span [1]or how a person ages has swung[2] back and forth. First, a couple of decades ago, the emphasis was on environment, eating right, exercising, and getting good medical care. 47 It is the idea that you either inherit the right combination of genes that will let you eat fatty steaks and smoke cigars and live to be 100, or you do not. And the notion has stuck[3]. 48 If they can come up with an ancestor or two who lived a long life, they assume they have a genetic gift for longevity. But recent studies find that genes may not be so important in determining how long someone will live and whether a person will get some diseases—except, perhaps, in some exceptionally long-lived families. 49 The likely reason is that life span is determined by such a complex mix of events that there is no accurate predicting for individuals. The factors include genetic predispositions[4], disease, nutrition, a woman’s health during pregnancy, and subtle[5] injuries and accident. 50 The result is that old people can appear to be struck down for many reasons, or for what looks like almost no reason at all, just chance. [1]壽命 [2] swing vi.不及物動詞 搖擺, 擺動, 搖蕩 輕鬆地走; 大搖大擺地行走[Q][(+along/past/by/out of)] [3] stick vi.不及物動詞 黏住; 釘住 陷住; 哽塞; 被困住 [4] Predispositions KK[͵pridɪspəˋzɪʃən]DJ[ˋpri:͵dispəˋziʃən] n.名詞 傾向; 素質,易染病體質 [5] Subtle 微妙的, 難捉摸的, 不可思議的 纖細的; 微微的; 隱約的 精巧的, 精湛的; 精良的 不知不覺中起作用的a subtle poison 慢性毒藥
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VIP與詳解卡管理
