Are Older Men’s Sperm Really Any Worse? (study) Also: article author assumes men single and/or childless until their late 30s and older are probably autistic, retarded, or drooling simpletons
TL;DR summary of article farther below = Yes, older dude’s sperm (older in this article is divided up in this article as being roughly, dudes ages 30 – 40, 40 – 50, and 50 and older) is not as good. You’re more likely to pop out kid with mental or psychological issues than a dude who fathers a kid while in his 20s.
The author of this seems to assume that the kind of dude who “finally” gets married and cranks out kids “later in life” is probably single for so long because he’s autistic, a drooling basket case, or goodness knows what.
Excerpt from article that implies that older single / first time married men are mentally retarded or socially inept losers:
The type of men who have children later in life may be different from those who do not, and those differences may be at least partially responsible for the increased autism rates.
— end excerpts —
How condescending and rude.
If older single / childless men are not suspected of being Totally Ghey, they are assumed of being pedophiles, or now, mentally handicapped.
Okay, so if you are a single man past age 30, 35, 40, 45, you are obviously (sarc tags here) autistic, mentally retarded, or inept.
How do you older single and childless guys so much as tie your own shoes in the morning, or brush your teeth, let alone actually and finally get a woman to procreate with “later in life”?
How do you put a T-shirt on? Can you do it alone, or do you need help with that?
If you do put a T-shirt on alone, do you have to have instructions for that, like a big arrow printed on the shirt, pointing at the hole in the middle that says, ‘head goes here?’
How do you make it through life, since you are so obviously incapable and incompetent of so much as attracting a wife, unlike normal men, who marry in their 20s, you big freako loser???
Apr 24, 2014
by EMILY OSTER
… So, are older sperm really worse?
Worries about aging sperm — or, more accurately, sperm from aging men — are the same as the concerns about aging eggs: decrease in fertility, and increase in genetic problems and psychiatric and behavior disorders among offspring. The primary issues in the latter category are autism and attention deficit hyperactivity disorder (ADHD).
…The evidence on autism and other behavioral disorders appears less reassuring. The authors of a 2011 review article in Molecular Psychiatry combined a number of studies comparing children of older and younger fathers (this is called a “meta-analysis”).
They concluded that relative to children born to 20- to 29-years-old fathers, those with fathers aged 30 to 39 were 1.2 times more likely to have autism; those with fathers aged 40 to 49 were 1.8 times more likely; and those with fathers over 50 were 2.5 times more likely.
The studies used in the meta-analysis were all pretty consistent. They did not all find the same size effect, but virtually all pointed to increased risk of autism with increased paternal age.
For the most part, these studies try to adjust for maternal age — though they can’t do as much as the donor-egg studies — but this analysis also runs into a second problem: The type of men who have children later in life may be different from those who do not, and those differences may be at least partially responsible for the increased autism rates.
We would clearly prefer to have a study that compared children born to the same man at different times in his life. This fixes a few problems.
First, since the father’s genetics stay the same among children, there is no longer a concern that, say, men who are autistic themselves have children later. Second, we avoid any concern that some kinds of dads are more likely to have their kids evaluated for autism or other disorders.
An analysis like this is referred to as a “sibling fixed effects” regression, a comparison between or among siblings. It’s been used to good effect in an analysis of breastfeeding, for example.
Last year, the journal JAMA Psychiatry published a study about paternal age that included this design, and, to put it mildly, the results were alarming. The study used a full census of births in Sweden from 1973 to 2001 and merged together information on parent age, siblings, other family members, psychiatric diagnoses, grades in school, and on and on. It’s a Big Data dream — as if you were inside the house of every person in Sweden for 30 years, taking notes on their every move.
The researchers ran regressions where they effectively compared children born to the same father at different times in his life, and they reported enormous changes in psychiatric problems. They found big effects on autism: Children born to men over 45 were 3.5 times as likely to be diagnosed with autism as those born to men aged 20 to 24.
But even more striking, and notable, were the effects on ADHD diagnosis: Relative to children born to men 20 to 24 years old, those who were born to men over 45 were 13 times more likely to be diagnosed with ADHD. Even children born to men 30 to 34 were more than three times as likely to be diagnosed with ADHD as those born to the youngest father group. This is enough to send a lot of men I know straight to the sperm freezer.
….But until then, I’d say the jury is out on the relationship between paternal age and child psychiatric problems. Yes, there is some possibility that it matters. But it’s probably not necessary to run off to the sperm freezer just yet.
(Link): Judges Who Force Insane, Negligent Women, or Addicts to Get Abortions or Undergo Sterilization – Also: Court Ordered Male Sterilization – Being A Parent Does Not Make A Person More Godly, Mature, or Responsible