再请教一题

zhangld

A diet high in saturated fats increases a person’s risk of developing heart disease.  Regular consumption of red wine reduces that risk.  er-capita consumption of saturated fats is currently about the same in France as in the United States, but there is less heart disease there than in the United States because consumption of red wine is higher in France.  The difference in regular red-wine consumption has been narrowing, but no similar convergence in heart-disease rates has occurred.

Which of the following, if true, most helps to account for the lack of convergence noted above?

Consumption of saturated fats is related more strongly to the growth of fatty deposits on artery walls, which reduce blood flow to the heart, than it is to heart disease directly.

Over the past 30 years, per-capita consumption of saturated fats has remained essentially unchanged in the United States but has increased somewhat in France.

Reports of the health benefits of red wine have led many people in the United States to drink red wine regularly.

Cigarette smoking, which can also contribute to heart disease, is only slightly more common in France than in the United States.

Regular consumption of red wine is declining dramatically among young adults in France, and heart disease typically does not manifest itself until middle age.

这最后一名话表达了一个什么意思，我怎么也想不明白了。

Andrea625

以下是引用zhangld在2006-3-1 23:30:00的发言：

Regular consumption of red wine is declining dramatically among young adults in France, and heart disease typically does not manifest itself until middle age.

这最后一名话表达了一个什么意思，我怎么也想不明白了。

法国年轻人中红酒的正常消费迅速减少了，在中年前，心脏病没有显著增加。

顺便问一句，把这题出处写在标题上吧。利人寻找，利己得到关注。