Women who wait to have a baby until after they have established their career are more likely to suffer from post-natal depression, scientists say.

科学家称，那些等事业有成再要宝宝的女性更容易患产后抑郁症。

Older mothers are more likely to "over-prepare" for their first-born and struggle when things don"t go as planned, a study suggests.

一项研究表明，高龄母亲更倾向于为第一胎宝宝做过多准备，当事情不按计划发展时，就会很纠结。

The findings are of great significance in the UK, where an increasing number of women are choosing to delay motherhood until they are more financially secure.

这一研究发现对于英国人而言意义重大。在英国，越来越多的女性选择在经济上有保障后再生宝宝。

Research leader Silje Marie Haga, from the University of Oslo, in Norway, said: "There are some indications that older, first-time mothers are vulnerable to postpartum depression, perhaps because they are used to being in control of their own lives: they have completed a long education and established a career before they have children.

研究领头人、来自挪威奥斯陆大学的西尔杰•玛丽•哈加说：有一些迹象表明，初次生育年龄更大的母亲更容易得产后抑郁症，这可能是因为她们习惯于掌控自己的生活：她们已经完成了多年的学业，并在生育前事业有成。

"But you can't control a baby; on the contrary, you have to be extremely flexible.

但你无法控制一个宝宝，相反地，你必须非常能变通。

"Several of the women I interviewed said themselves that this contributed to the huge feeling of letdown when things did not turn out as they had planned."

我采访的几个女性称，当事情的结果不像她们计划的那样时，她们会感到极其失望。

In the UK, there were 26,976 babies born to mothers of 40 and over in 2009, compared with 9,336 in 1989, according to the Office for National Statistics figures.

根据英国国家统计局的数据，在英国，2009年出生的婴儿有26976个是40岁以上母亲所生的，而1989年这样的婴儿为9336个。

The latest study analysed surveys from around 350 new mothers as well as in-depth interviews with 12 first-time mothers. It found 16.5 percent reported suffering from depression for up to six months after giving birth.

这一最新研究分析了对12位初次生育的母亲的深度访谈和对350位新妈妈的调查报告。研究发现，16.5%的母亲报告说自己在生完宝宝后遭受抑郁困扰已长达6个月。

Ms Haga said the interviews highlighted a number of risk factors apart from biological ones.

哈加女士说，访谈突出显示了生理问题以外的多个风险因素。

"It's not the need for control in itself, but rather the failure to achieve specific expectations that can trigger a depression," she said.

她说：不是控制欲本身，而是未能达到特定期望引发了抑郁症。

"In contrast, women who take a more relaxed approach to motherhood with more undefined expectations cope better with unexpected challenges."

相反地，那些用更放松的心态来面对生育、没有明确期望的女性能更好地应对突如其来的挑战。

Other women struggled after the delivery left them "feeling like a failure".

其他女性感到抑郁是因为分娩让自己感觉很失败。

One new mother told Ms Haga she struggled after having an unplanned caesarean section: "That wasn't how I was supposed to have a baby. I was so tired and so disappointed, I was so sad," she said.

一位新妈妈告诉哈加女士说，她在经历了计划外的剖腹产后内心很挣扎，她说：这不是我应该生下宝宝的方式。我太累太失望了，感觉好悲伤。

"I hadn't been able to give birth to my baby; someone had to do it for me."

我未能自己生宝宝，而不得不让别人帮我生。

"In my study the women who had the greatest need for control often had the strongest wish to have a natural birth," Ms Haga noted.

哈加指出：在我的研究中，那些控制欲最强的女性通常想自然分娩的愿望也最强烈。