科学告诉你：关于怀孕的这些老话居然不是迷信_时事

科学告诉你：关于怀孕的这些老话居然不是迷信

不过，近几年有大量的科学研究发现一些有关婴儿和怀孕的奇怪旧观念还是有一定科学道理的。

Here are a few that superstitious grandmothers everywhere can put in the win column.

下面就是一些我们的迷信祖母的正确观念。

A long, difficult labor means the baby's a boy

分娩的过程要是痛且长，就意味着婴儿是男孩

Researchers aren't quite sure why this one's true, but nonetheless: In 2003, a team of doctors analyzed more than 8,000 births at a single hospital in Ireland between 1997 and 2000, excluding women who delivered prematurely or needed to induce labor. When they crunched all the numbers, the difference between the sexes was small but noticeable.

尽管研究人员仍不太清楚为什么这个观念是正确的，但事实就是这样：2003年，一组医生分析了来自同一家爱尔兰医院的8000多名新生儿的资料，这些新生儿都出生在1997年至2000年间，并且排除掉了早产以及引产出生的婴儿。当这些医生分析所有数字后发现，分娩男婴女婴的差别虽然很小，但可以发现一条明显的规律。

On average, labor for boy births lasted a little over six hours, while girl births took a little under six. Women delivering boys were also more likely to run into complications during delivery, requiring C-sections 6 percent of the time (compared to 4 percent for girls) and forceps in 8 percent of cases (as opposed to 6 percent).