Scientists first studied the effects of calorie restriction on aging in the nineteen thirties.

VOA: special.2009.09.01

This in combination with the effects of aging and with genetic disposition in some instances, can cause a worldwide pandemic, and this is what we're currently experiencing.

某些场合中,衰退和生化影响,能引发全球性的大流行，这也是我们近来所见所闻。

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