The Link Between Birth Control Pills and Sex Drive
nytimes.com
nytimes.com
I'm surprised the article mentions it's not known by doctors.
I'm also surprised that male birth control pills don't exist yet. In my mind it is the easiest thing ever, exogenous testosterone basically solves the problem. We know it's fairly reversible because lifters go on that stuff for years and then still manage to have kids.
It's "just" a matter of figuring out the correct dosages and figuring out how long before it becomes effective.
I suspect significantly more men would be willing to take birth control pills if it was making them "jacked".
The hard part is balancing the sterilisation effect with other side effects whilst having good efficacy. And then there's also the problem of reversing the effects.
I'm not on the pharmaceutical business, there's probably a good reason it doesn't exist yet. I just don't know if it's a legal/public perception thing regarding anabolic steroids, it's too hard to manage the side effects or if it's something else.
Is sex education that bad? Do people think it's made on demand?
It was a great example for me of mass ignorance. Tons of stuff, including this, are very well established, but since we live is such an individualized society where interactions with kids and parents are no longer something that happens at all ages continuously throughout life, and your similarly aged friends for the same reason neither, could it happen that such facts simply never pop up until somebody runs into them.
In 30 years, you'll not believe established science about aging.
If we take it to be a simple exponential distribution with mean 66 days, then lambda = 1/66. and variance is 4356 or a standard deviation of 66 days as well.
In that case, by month 4, about 83% of men would be expected to have sperm in their semen.
To delve deeper, what you're missing here is the idea of skewness and kurtosis. These are the 'higher moments' of the probability distribution function (natural extensions of mean, variance, etc). In particular, the skewness is where you're getting hung up. You assume in your first sentence that the skewness of every pdf is zero (i.e., it 'goes both ways'). That is not generally the case.
In particular, the skewness of the 'time to first sperm' distribution must be very positive because it can never be below zero.
If you were talking about how much sperm they had exponential would indeed be better. But we’re not. Just if they have any.
If the average time it takes is 2,5 months, you should expect to wait on average 2,5 months, not 4.
That is indeed not the same as asking when do 83% of men have sperm, since 83% is not the average.
Things cannot be distributed where the distribution has values the thing can never have. The time until an event cannot be negative. The cdf of a normal distribution always has a non-zero value at zero. There is no chance a sperm is ejaculated before it's made. That's a logical impossibility. Thus time to first sperm is absolutely not normally distributed.
It would not be tested explicitly for such because it is both bad at its job and has negative side effects well known from all the steroid users.
So does breathing. (In fact, it causes death in 100 percent of the cases.)
No, that's just cope for the fact that it is already socially acceptable for women to ruin their bodies for vanity purposes.
It changes social behavior, including voting patterns, in ways contrary to the desires of our rulers.
EDIT: Looks like I might be completely wrong (although the caveat about hidden variables stands):
"But an even bigger positive is what comes when we look at the divorce rate. Despite the whole my-sex-life-is-meh-and-I-am-not-that-attracted-to-my-partner thing, women who chose their partners when they were on the pill were significantly less likely to divorce than women who chose their partners when they were off it."
https://behavioralscientist.org/quality-sex-relationships-bi...
There's a lot more detail in the link.
https://www.npr.org/2020/05/09/852807455/how-the-approval-of...
If Wegovy/etc are on a similar scale, how long until we find out those unintended side effects?
For anyone looking at solutions to this, I recommend activated charcoal water filters for the home.
It takes a lot more to cause gynaecomastia despite it, and the amounts that get into drinking water are extremely trace.
It's much more likely to be all the endocrine disrupting forever chemicals, particularly micro- and nano-plastics, and metabolic disorders secondary to all the stuff wrong with people's health nowadays(air pollution, sleep disorders, sedentary lifestyles, gut dysbiosis, etc)