How did we get fertility so wrong Am I Normal with Mona Chalabi

Transcriber:

Biologically speaking,

I am right in the middle
of my reproductive age.

That’s the years between 15 and 49,

when most people with ovaries
are able to have children.

Socially speaking, that means
I’m right in the middle

of roughly 30 years' worth
of public commentary,

suggestions and judgments
about my fertility.

Whether it’s regular pleas from my mum
to give her grandchildren,

or depictions of desperate
females in movies and TV,

it’s a reality that is hard to escape.

And let’s not forget about the ads

that have been following me
around the internet

since the age of roughly 25,
promising to track my ovulation,

confirm a pregnancy

or let me know about places nearby
where I can freeze my eggs.

But what about the sperm?

Why have none of my male friends

or the guys I’ve dated
been exposed to this same pressure?

[Am I Normal? With Mona Chalabi]

Well, we know from historical data
that for generations,

research into fertility has focused
on poking and prodding uteruses,

while our understanding of male fertility
has continued to lag behind.

For example, in the US,
there was a 50-year gap

between the founding of the American Board
of Obstetrics and Gynecology in 1927

and the formation of the American Society
of Andrology in 1975.

And today in the US,

there are an estimated
five reproductive endocrinologists

who mostly specialize
with female patients,

for every one male fertility specialist.

Research into male fertility really only
began to make waves in the 1990s.

And since then, research has started
to chip away at the persistent myth

that a man’s sperm is viable
over his entire life.

A study from 2013 found

that there is a big change that happens
in male fertility after the age of 34.

At age 35, their sperm count
begins to drop.

At 40, the sperm concentration,

as well as the percentage of sperm
with a normal shape, begins to decline.

At 43, sperm motility decreases,

And from the age of 45,
semen ejaculate volume begins to go down.

What all of this means is
that from the age of 34,

there is a declining likelihood

that a man will father a child
through intercourse.

And that probability continues
to decline as they get older.

Crucially, that decline exists

independently of the age
of their female partner.

Because of research like this,

a growing number of physicians are arguing
that men have biological clocks, too.

This is really important

because most fertility research
did not control for the age of the father.

What this means is
that so much of our understanding

about how women in their late 30s
are struggling to get pregnant

has not taken into account

that many of them are trying
to get pregnant with men in their 40s.

Imagine the other fertility breakthroughs

that could come about
with even better research –

and the effect that all of that would have
on our culture and our behavior.

Young couples might be able
to better prepare when to have children.

Guys would be hounded by ads
on when to freeze their sperm,

and I would have even more reason
to continue to date young hot men.

We’ve always known
that it takes two to tango.

Now it’s time for research
to give both partners equal billing.

抄写员:从

生物学上讲,

我正处于
生育年龄的中间。

那是 15 到 49 岁之间

,大多数有卵巢的
人能够生育孩子。

从社会角度来说,这意味着
我正

处于大约 30 年的关于我的生育能力
的公众评论、

建议和判断的中间

无论是我妈妈经常请求
给她的孙子孙女,

还是
电影和电视中对绝望女性的描绘,

这都是一个难以逃避的现实。

我们不要忘记大约 25 岁以来在互联网

上一直在关注我的广告


承诺跟踪我的排卵、

确认怀孕

或让我知道附近
可以冷冻卵子的地方。

但是精子呢?

为什么我的男性朋友

或我约会过的人都
没有受到同样的压力?

【我正常吗? 与 Mona Chalabi]

好吧,我们从历史数据中
知道,几代人

以来,对生育能力的研究都集中
在戳和刺激子宫上,

而我们对男性生育能力的理解
却一直落后。

例如,在美国,

从 1927 年美国

妇产科委员会的成立
到 1975 年美国男科学会的成立,有 50 年的差距。

而今天在美国,

估计有
5 个 生殖内分泌

专家大多
专攻女性患者,

男性生育专家为每一位。

对男性生育能力的研究
在 1990 年代才真正开始掀起波澜。

从那时起,研究
开始打破一个长期存在的神话

,即一个男人的精子
在他的整个生命中都是可行的。

2013 年的一项研究发现


男性在 34 岁之后的生育能力发生了很大变化。

在 35 岁时,他们的精子数量
开始下降。

在 40 岁时,精子浓度

以及
具有正常形状的精子百分比开始下降。

43岁精子活力下降

,45岁
开始射精量开始下降。

所有这一切都意味着
,从 34 岁起,

男性通过性交

生孩子的可能性
越来越小。

随着年龄的增长,这种可能性会继续下降。

至关重要的是,这种下降

与女性伴侣的年龄无关。

由于这样的研究

,越来越多的医生
认为男性也有生物钟。

这非常重要,

因为大多数生育力研究
都没有控制父亲的年龄。

这意味着
,我们对

30 多岁女性如何努力怀孕的理解如此之多,

并没有考虑

到她们中的许多人正
试图与 40 多岁的男性怀孕。

想象一下更好的研究可能带来的其他生育突破

——

以及所有这些
将对我们的文化和行为产生的影响。

年轻夫妇可能
能够更好地准备何时生孩子。

男人们会被关于何时冷冻精子的广告所困扰

而我将有更多的理由
继续与年轻的帅哥约会。

我们一直都
知道探戈需要两个人。

现在是时候进行研究
,为合作伙伴双方提供平等的计费。