133 votes
Accepted

Is there plastic microfiber in 83% of tap water?

The study by Orb Media was subject for articles in German news website Spiegel Online (commercial) and WDR (public service broadcasting). Both articles, quoting staff from the German Federal ...
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  • 18.9k
56 votes
Accepted

Are Unvaccinated Children Healthier?

Summary: The survey this article was based on was biased, poorly designed and poorly implemented. The conclusions cannot be trusted. This study was examined by Orac who has been "checking in ...
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  • 133k
50 votes

Does 5G pose health risks?

I would say this is Not True Just going by the sentence you’ve highlighted: Health experts believe this increased exposure to 5G will have a devastating impact on our health. It’s already ...
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25 votes
Accepted

Does Flint have a much lower rate of lead poisoning than it had two decades ago?

His data are approximately correct. He gives all the sources and assumptions at the bottom of the article as well as a spread sheet with all the data. Compare his data to Preliminary state data shows ...
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  • 99.2k
23 votes
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Are US sunscreens less effective due to FDA regulations?

Do FDA regulations make US sunscreens less effective than international products? Unlike the EU, FDA regulations do not dictate standards or minimum requirements for UVA protection in sunscreen. Also ...
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22 votes
Accepted

Is standing near Lake Karachay for an hour fatal?

ONE HOUR ANYWHERE NEAR IT AND YOU'RE DEAD This claim is probably too broad and the information is outdated, but the general idea is correct. A quick search revealed a few relevant details: From ...
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  • 5,506
22 votes
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Do glyphosate-based herbicides cause autism?

Here is a good article that seems much more unbiased. It looks like there is no real scientific link. Is there evidence supporting a link between autism and GMOs However, whether you are searching ...
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  • 236
22 votes
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Are activities in which both people bleed on each other considered "No Risk" for the transmission of HIV?

Regarding the claim that scratching is a "No Risk" activity, here is a study showing no HIV transmission from scratches and bites from a person with contaminated fingers and mouth: To examine the ...
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  • 50.6k
19 votes
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Is prone masturbation detrimental to your sex life?

The whole idea that prone masturbation is harmful started in 1998 when Dr. Lawrence I. Sank proposed a theory of sexual dysfunction called Traumatic Masturbatory Syndrome (TMS) (1) . In his journal ...
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  • 29.8k
18 votes
Accepted

Does Vitamin D created by sun exposure get washed off in the shower?

Breakdown of the claims There are a couple of claims contained together in this question. Vitamin D is formed on the skin (as well as in). Relatively large amounts remain on the skin or are secreted ...
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  • 43.6k
18 votes
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Do desktop computers catch fire (often)?

Do desktop computers catch fire often? http://www.nfpa.org/~/media/Files/Research/Fact%20sheets/office_fact_sheet.pdf In 2007-2011, there were an estimated 730 reported U.S. home structure fires ...
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  • 2,005
18 votes
Accepted

Is the EPA's regulation of particulate matter justified with evidence?

It is justified with (recent) evidence. Selectively quoting from WP:Pariculates#Health_problems, emphasis of publication dates mine: Inhalation of PM2.5 – PM10 is associated with elevated risk of ...
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  • 18.9k
17 votes
Accepted

Is it possible to train dogs to detect hypoglycemia?

It is difficult to prove that it is impossible to train dogs to detect hypoglycemia. All that can be done to disprove this claim is to show systematic efforts to train dogs have failed, and that no-...
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  • 133k
16 votes
Accepted

Does drinking cattle urine have health benefits?

This is a religiously motivated idea. And it is very probably a quite terrible idea from a health perspective. It is definitively a terrible idea from a taste perspective. After reviewing the ...
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  • 43.6k
16 votes

Is food becoming less nutritious because of depletion of soil minerals and nutrients?

Avery gave you a list of "yeses" by moving the goal posts to an issue of organics vs non-organic modern agriculture. Here's a peer-review no to the actual question of historical decline: ...
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  • 51.1k
15 votes

Is the EPA's regulation of particulate matter justified with evidence?

I am submitting a new answer because I believe there is a gap in understanding in how these regulations work. I will try to be brief, yet thorough. EPA regulates Particulate Matter, or PM, under the ...
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15 votes

Does a dairy-free diet reduce autistic behaviour?

There is little evidence to support the effectiveness of nutritional supplements or the GFCF diet for improving ASD symptoms. A dairy-free, gluten-free diet for autistic kids is called GFCF (Gluten-...
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  • 40.4k
14 votes
Accepted

Do electric cars create more fine dust pollution than comparable petrol cars?

They certainly do not create more particulate emissions, but they might not create that much less than a gasoline powered car, depending on the model of car considered. First, what was previously ...
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14 votes
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Does breathing Beijing's air for one hour reduce life expectancy by 20 minutes?

This claim is difficult to evaluate in part because there are too many different variables at play. Fundamentally the reporter is quoting a statement by Richard Muller, Scientific Director of Berkeley ...
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  • 16.8k
14 votes
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Are organic vegetables higher in carcinogens?

Issue: Whether organic vegetables are comparably more carcinogenic to vegetables treated with pesticides? Evidence: Research shows that numerous chemicals present in natural products tested ...
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  • 22.6k
14 votes

Is the European NO₂ limit of 40 µg/m³ for outside air backed by strong evidence?

Summary The question as asked in the title depends on what you consider "strong evidence". I will therefore have a look at which side makes the better-sourced point. (Which is not just about "...
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  • 18.9k
13 votes

Do the plastic shade balls in Los Angeles leach chemicals into water?

The claim that plastic shade balls used in the LA reservoir leach chemicals into drinking water can be denied based on the following points. The shade balls are coated in carbon black, a food-safe ...
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  • 22.6k
13 votes
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Do we unknowingly eat 5 grams of plastic per week?

I think this is rather disputed. The 5g figure appears to have originated with Reuters Singapore based on an Australian study, and it's even pegged as a "conservatives estimate" therein. On ...
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  • 51.1k
12 votes

Is there plastic microfiber in 83% of tap water?

No. Of course there exist locations in the world where microplastic will be found in the water -- given the standards in some parts of the world, this cannot be doubted -- but overall the claims are ...
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  • 432
11 votes
Accepted

Is this an authentic photo of a parasite infection on a man's shoulder?

Snopes already covered this one. It's a composite image of a man and a lotus seed pod. The static image accompanying the posts was the one displayed above, which allegedly pictures some form of ...
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11 votes
Accepted

Do Sugar-Free Gummy Bears cause gastrointestinal distress?

A study published in the European Journal of Clinical Nutrition did find that Lycasin-sweetened candy did produce an increased prevalence of gastrointestinal symptoms (bloating, flatulence, rumbling, ...
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  • 3,125
11 votes
Accepted

Are people physically sensitive to light from LEDs over other sources?

Yes, it is recognised as a potential problem: LED lighting flicker and potential health concerns: IEEE standard PAR1789 update. The IEEE Standards Working Group, IEEE PAR1789 “Recommending practices ...
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  • 1,122
11 votes
Accepted

Does the Dakota Access Pipeline (DAPL) meaningfully increase the risk of water contamination?

Is the existing Northern Border Pipeline (which is natural gas as opposed to DAPL's crude oil) a comparable environmental hazard, or is DAPL provably more risky? Natural gas and crude oil spills ...
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  • 1,093
10 votes
Accepted

Does raising your arm in the air help when you are coughing/choking on something?

With arms raised oxygen uptake is increased for normal breathing, see Couser JI, Martinez FJ & Celli BR (1992): The increases in [oxygen uptake], [carbon dioxide production], [minute ...
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  • 2,402
10 votes

Does residential radon cause lung cancer?

Key assertions here are, at best, out of date. According to a 1997 study: Until ongoing case-control studies of indoor radon are completed and the data are pooled and analyzed, the studies of ...
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  • 7,049

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