Live data from Hacker News

Falling sperm counts, declining egg quality, and endocrine disruptors

nytimes.com

461–470 of 640 posts

Re: Falling sperm counts, declining egg quality, and endocrine disruptors

#461

I went to glass containers for food storage and transfer food out of plastic packaging as soon as possible. Precocious puberty: I had a mental health hit (near collapse) from something that happened in my mid 20's. I started dating the stepdaughter of a neighbor (upper-middle class area) who said she was 19, and she definitely seemed it by being smart, chill, age-mature, sensible, and fully-developed (Tanner V). Lo a…

Is this a joke? Why are you admitting to being attracted to 12 year old girls on here?

> I felt awful, ashamed, and like a perv monster.

You are

Re: Falling sperm counts, declining egg quality, and endocrine disruptors

#462
A friend of mine is working on a supplement that may help in this regard, at least on the female part of the equation.

> There is a a very interesting substance that could also increase fertility: nicotinamide mononucleotide (NMN).

https://novoslabs.com/can-nmn-supplements-restore-fertility/

(Disclaimer: I've invested in his company)

Re: Falling sperm counts, declining egg quality, and endocrine disruptors

#463

Earlier quoted context omitted.

I'm not sure you should specifically be worried about vinyl shower curtains, but vinyl is a specific concern, because to get the form of vinyl that's soft and pliable, the vinyl is mixed about 50/50 with phthalates that are known endocrine disruptors. That said, phthalates are used in tons of stuff, and it's not fully clear to me which sources are the most important. I've replaced my soap/shampoo/shaving creams with…

If it’s in plastic tubing, would that include all homes with pex piping? Water dispensers in refrigerators? Seems impossible to get away from.

It will definitely leach from PVC pipe. I'm not sure about PEX. Yes to water dispensers in refrigerators.

In general, the problem will be worse with smaller diameter pipes/tubes due to surface area/volume ratio, worse if the water has been standing in the pipe/tube, and worse if the water is hot.

These chemicals are extremely difficult to get away from. I saw a study where they tried to get volunteers to take a reasonably large set of actions to reduce their levels of BPA and Phthalates, and they were able to get them down to about half the original levels, but not lower.

Re: Falling sperm counts, declining egg quality, and endocrine disruptors

#464

I went to glass containers for food storage and transfer food out of plastic packaging as soon as possible. Precocious puberty: I had a mental health hit (near collapse) from something that happened in my mid 20's. I started dating the stepdaughter of a neighbor (upper-middle class area) who said she was 19, and she definitely seemed it by being smart, chill, age-mature, sensible, and fully-developed (Tanner V). Lo a…

If she was biologically mature, being attracted to her doesn't mean you are a pedophile. Attraction is a result of biology, not of man-made laws. It would of course still be illegal to date her. The last psychiatrist has written about that, but I couldn't find it right away.

Re: Falling sperm counts, declining egg quality, and endocrine disruptors

#465
post #425

Earlier quoted context omitted.

Confused? No. She passed herself off as that, acted, and looked the part completely. Size D. Extreme precocious puberty. You would've been fooled too, so please don't judge with perfect knowledge and 20/20 hindsight from afar if you weren't there.

> acted I have a very hard time believing a 12 year old can pass as a 19 year old in maturity. What knowledge or experience can a 12 year old offer to a mid 20s individual to appear intelligent, as you claim? > You would've been fooled too Zero chance. In my mid 20s, I already considered 19 year olds to be far too removed in life stages to consider seriously and the maturity gap between a 12 year old and an 19 year o…

You have a hard time believing it possible, so it can't be true?

Are you aware that many models you see in magazines are only in their early teens, made to look older with makeup?

Re: Falling sperm counts, declining egg quality, and endocrine disruptors

#466
post #174

Earlier quoted context omitted.

> They are typically made to improve profit in some fashion, not to improve human health. The main goals of GMOs are to increase yield and protect against disease / pests, which is practically the same goal we've had for thousands of years of crop domestication. Take for instance wild pre-domesticated maize vs present day non-GMO maize[1] and you'll see what "natural" crop selection does. Not only do we select for st…

we've been eating GMOs for millenia. That's a little like saying "There's zero difference between traditional animal husbandry and cloning." Sorry, I think there is a meaningful distinction between traditional human intervention in plant varieties and the more recent intervention called GMO. Most of the world seems to agree that there is a distinction, enough so that we invented new language for what it is we are doi…

My apologies. When I added the "blindly lump ..." sentence, I didn't wasn't replying directly at your comment, but rather in reference to the worrying trend amongst anti-gmo movements to lump any GMO related practices in the same basket.

> That's a little like saying "There's zero difference between traditional animal husbandry and cloning."

This is a very interesting topic, actually! I can't comment on animal husbandry (much less dolly style cloning), but cutting (cloning) is a very common way to propagate crops, and has been done for longer than we care to know. It's also the natural way in which some plants and fungi propagate. There are many benefits to cloning, but there are also downsides: when disease affects one, it affects all your clones. You can protect against that by seed propagation, crossing, etc, but then you have a less predictable and consistent crop, which in the modern market is sometimes frowned upon.

I know most farmers will pick consistency over variety any time of the day because they have to make a living, and most people won't buy greenish tomatoes, yellow or green oranges, white artichokes, etc. People also expect their fruits and veggies to taste as expected, so it's difficult to sell mixed variants.

Note: I should also say I'm from a family of farmers so I'm probably biased towards defending our practices -- in our case we grow citruses, stone fruits, artichokes, aubergines, melons, etc. (not big-agro scale, think more cooperatives in rural Spain), and I do have my personal opinions on traditional techniques vs. modern vs. big-ag, use of pesticides, overstressing the soils, etc. I'm also from an area that has suffered bad droughts and deforestation over generations so I'm also not one to romanticize about traditional farming methods and some traditional attitudes. Take whatever I say with a pinch or more of salt!

Re: Falling sperm counts, declining egg quality, and endocrine disruptors

#467
post #46

Related: "Chemicals in plastics damage babies' brains and must be banned immediately (cnn.com)" https://news.ycombinator.com/item?id=26211605

Except most babies seem to be fine, so maybe the fear is overblown?

I think it should be kept in check, as it seems all sorts of nasty stuff can be mixed into plastic. But many plastics seem to be fine.

There is also poisonous stuff in plants, including wood.

Re: Falling sperm counts, declining egg quality, and endocrine disruptors

#468
post #197

Earlier quoted context omitted.

One does not need 1000 years to evolve. One generation where soy intolerance leads to death through famine/malnutrition is enough. That is why cultural differences are so important to take into account.

That first sentence is an awful way to kick off a comment about population genetics.

The point is if we make a population-wide change within a generation, we will see natural selection within the next. Not sure what your point is.

Re: Falling sperm counts, declining egg quality, and endocrine disruptors

#469
post #202

As someone who has had to do IVF for our child and go through the challenge of figuring our what to do to try and improve sperm quality, I can tell you once you start looking into it, basically everything about modern life is bad for sperm. Heat, radiation, plastic, micro plastics, soya, tap water, Teflon, antibacterial soap, underpants, western diet. It’s a perfect storm. If you’re going though it though I offer a r…

> radiation I don't doubt much of what you're saying, but is there any evidence to support that modern life exposes you to any more harmful radiation than life in the past did?

The above ground nuclear testing in the Atomic Age certainly increased background radiation levels.

Re: Falling sperm counts, declining egg quality, and endocrine disruptors

#470
post #435
post #266

Earlier quoted context omitted.

Weight loss and proper exercise will probably deliver 99% of the improvements for 99% of the people. Stressing about heat, radiation, micro plastics, or other random stuff seems like extra stress for not that much benefit. Most people in Western world are either out of shape, or straight up obese. It makes sense that, that will have huge negative effects on fertility.

> Weight loss and proper exercise will probably deliver 99% of the improvements for 99% of the people. In addition to be factually incorrect, consider how what you said sounds to the many people who are healthy, active but are having problems with something they thought would be easy. This is very stressful for many people, seeming especially cruel after years of worrying about accidental pregnancy, and the medical t…

Being offended about someone saying obesity is bad for you is nonsense. Fine, someone is offended. Oh well.

And it is true - most issues are related to weight.

Post reply on HN