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Re:Americans May Be Ingesting Thousands of Microplastics Eve... by userbinator on Friday June 07, 2019 @08:19PM (#20129739)
and b) we don't know

If the claims of consumption are true, then people have been ingesting plastics for a long time and there have been no observed ill effects attributable to it, and I'd say it's more like "we have plenty of evidence that it's not really harmful" than "we don't know" --- but of course, the latter makes for more sensational reporting and fearmongering...

This somewhat reminds me of the paranoia surrounding radio waves and non-ionising radiation --- surely there would be some obviously noticeable negative effects by now, after well over a century of use, but the evidence strongly says that beyond known effects like heating, there's nothing else to worry about.

It's like those articles that claim (and likely are true) that people ingest X insects/spiders/other-disgusting-thing every year; it's sensational, but not really something to worry about (personally, I'd rather ingest the plastic...)

I've noticed there's a bit of an anti-plastic movement going on lately, with plenty of FUD articles like this being spread (not just on HN, but elsewhere), and I wonder if there's an ulterior motive...

Re:Americans May Be Ingesting Thousands of Microplastics Eve... by alexandercrohde on Friday June 07, 2019 @08:33PM (#20129804)
I just have to downvote this mentality....

For example men's spermcounts have been going down steadily and predictably for over 30 years, and are now HALF what they were 30 years ago. Scientists have done thousands of studies and haven't identified a root cause. (I bring this up because many plastics are made flexible with a xenoestrogen named BPA)

We can't say "Plastics must be fine," we have no control group to compare against. For all you know the increases in allergies, nearsightedness, autoimmune disorders, or reduced sperm count are related.

---

Remember when leaded gasoline reduced a whole generation's IQ by a few points and caused a crimewave? Sometimes the negative effects of an enviromental choice take decades to figure out.

It's past time to switch into a "cautious until proven safe" way of thinking when it comes to health and environment.

Re:Americans May Be Ingesting Thousands of Microplastics Eve... by hammock on Friday June 07, 2019 @09:05PM (#20129935)
BPA is not used to make plastics more flexible. It is commonly used in all sorts of places though.

Phthalates are commonly used to make plastics more flexible. They are also estrogenic.

Parabens, PCBs, and pesticides are all other common entrants into the body with estrogenic effects.

( Reduced sperm count and sperm quality)

Re:Americans May Be Ingesting Thousands of Microplastics Eve... by chrisco255 on Friday June 07, 2019 @11:11PM (#20130395)
Do you have sources?
Re:Americans May Be Ingesting Thousands of Microplastics Eve... by ddebernardy on Saturday June 08, 2019 @08:09AM (#20131948)
Re:Americans May Be Ingesting Thousands of Microplastics Eve... by chrisco255 on Sunday June 09, 2019 @07:09AM (#20138463)
The Guardian is an online news site (with all the sensationalism that entails), not a serious scientific publication.
Re:Americans May Be Ingesting Thousands of Microplastics Eve... by ddebernardy on Sunday June 09, 2019 @11:30PM (#20143712)
The first article I linked to has links to the scientific sources.
Re:Americans May Be Ingesting Thousands of Microplastics Eve... by mrob on Friday June 07, 2019 @09:34PM (#20130056)
Most likely candidate for increase in nearsightedness is decreased exposure to sunlight:

https://www.nature.com/news/the-myopia-boom-1.17120

Re:Americans May Be Ingesting Thousands of Microplastics Eve... by userbinator on Friday June 07, 2019 @09:33PM (#20130049)
Scientists have done thousands of studies and haven't identified a root cause.

Then there likely isn't one, beyond maybe natural evolution itself.

Remember when leaded gasoline reduced a whole generation's IQ by a few points and caused a crimewave? Sometimes the negative effects of an enviromental choice take decades to figure out.

That was actually a very noticeable effect that plenty of studies showed evidence of, unlike this one.

It's past time to switch into a "cautious until proven safe" way of thinking when it comes to health and environment.

We'd still be living like cavemen if that were the case.

Re:Americans May Be Ingesting Thousands of Microplastics Eve... by 7952 on Saturday June 08, 2019 @02:57AM (#20131042)
Just because we can't measure an effect, it doesn't mean that one doesn't exist. This seems like a really unscientific thing to say. But remember that the world is not a lab where you can exactly control conditions. There is no control group, and the null hypothesis cannot be proven. But we still have to deal with that complex world and make choices.

To believe that a novel substance is benign until proven otherwise is just a form of bias. There is no objective reason why a substance should be innocent until proven guilty. We just have to adopt that policy out of practicality!