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Medicine

Gas Stoves Pollute Homes With Benzene, Which Is Linked To Cancer 297

Researchers at Stanford University found that among the pollutants emitted from gas stoves is benzene, which is linked to cancer. "Levels of benzene can reach higher than those found in secondhand tobacco smoke and the benzene pollution can spread throughout a home," reports NPR. From the report: Stanford scientists measured benzene from gas stoves in 87 California and Colorado homes in 2022 for the paper published in the journal Environmental Science and Technology. They found both natural gas and propane stoves "emitted detectable and repeatable levels of benzene that in some homes raised indoor benzene concentrations above well-established health benchmarks." The risks of benzene have long been known. The Centers for Disease Control and Prevention says the chemical is linked to leukemia and other blood cell cancers.

"Benzene forms in flames and other high-temperature environments, such as the flares found in oil fields and refineries. We now know that benzene also forms in the flames of gas stoves in our homes," said Rob Jackson in a statement. He's the study's senior author and a Stanford professor of earth sciences. With one burner on high or the oven at 350 degrees, the researchers found benzene levels in a house can be worse than average levels for second-hand tobacco smoke. And they found the toxin doesn't just stay in the kitchen, it can migrate to other places, such as bedrooms. "Good ventilation helps reduce pollutant concentrations, but we found that exhaust fans were often ineffective at eliminating benzene exposure," Jackson said. He says this is the first paper to analyze benzene emissions when a stove or oven is in use.

Researchers also tested whether cooking food - pan-frying salmon or bacon - emits benzene but found all the pollution came from the gas and not the food. That's important because the gas industry often deflects concern about pollution from its fuel, to breathing problems that can be triggered by cooking fumes. There are no studies out there that say cooking with gas will make someone sick. This is all about increasing risks for certain illnesses.
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Gas Stoves Pollute Homes With Benzene, Which Is Linked To Cancer

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  • by fahrbot-bot ( 874524 ) on Saturday June 17, 2023 @02:20AM (#63609666)

    Yum, benzene and leukemia. It'll be fun to see how some people try to spin this ...

    • Re: (Score:3, Insightful)

      It'll probably involve the terms "nanny state", "freedom", and if they're looking for bonus points they'll work in some reference to gay or trans individuals.

    • by Alypius ( 3606369 ) on Saturday June 17, 2023 @05:58AM (#63609926)
      The key phrase here is "in some homes," which is an academic weasel way of saying "we constrained the study to ensure we got the result we wanted." They got this result by leaving the burners on for over an hour, in a tiny space, with little to no ventilation. In other words, not even remotely a real-world scenario. Remember, ten years ago, gas was hailed as better for the environment... when it was relatively expensive. Then it became cheap and abundant, and suddenly it's a public health menace. In other words, goods are only acceptable when poor people can't afford them.
      • by AmiMoJo ( 196126 ) on Saturday June 17, 2023 @06:11AM (#63609948) Homepage Journal

        What you attribute to malice is just the normal way that studies work. They wanted to see if there was any issue, so they took a scenario where it should be easier to detect as a starting point.

        Since they found something, it's worth getting more expensive equipment and doing a more detailed study of how it affects larger spaces and shorter use times.

        Most likely it's just a question of how much worse it is than the baseline, not that a typical domestic kitchen provides complete protection from the effects.

        • by Alypius ( 3606369 ) on Saturday June 17, 2023 @06:37AM (#63609996)

          Except that it *has* been studied and in great depth. Research for my masters thesis (rural electrification) explored this in detail and while there are some emissions (you're burning something, so you're going to get them), the effect on health outcomes in modern homes is negligible.

          Might be my cynicism showing, but this appears to be a shoddy study designed solely to generate the clickbait headline, spread fear to bolster a policy initiative, and otherwise serve as disinformation.

    • "Linked to cancer" sounds really scary but means nothing unless some numbers are given. The artificial sweetener Saccarine was taken off the market in the 1970s because it was linked to cancer in mice-when mice were injected daily with 1000x the normal amount that we humans would eat in a year. These studies were "coincidentally" funded by the sugar industry.

      I'm sure if you would follow the money, it would be revealed that this study and all of the other the recent "gas stoves are bad" articles are funded

    • You mean how these studies cited for the purpose of banning things are often terrible and conducted in a manner to come to a pre-determined conclusion? Your circle jerking is cringe.
  • Stove tops have hoods for a reason. Multiple reasons actually.

    • Stove tops have hoods for a reason. Multiple reasons actually.

      Ya, but many, like mine (over an electric stove), don't vent outside. It just provides a light, fan and carbon filter.

      • The purpose of the hood *is* ventilation. If the fan isn't funneling it outside, then it's not a hood.

        • by teg ( 97890 )

          The purpose of the hood *is* ventilation. If the fan isn't funneling it outside, then it's not a hood.

          Some of them force the air through a filter with e.g. activated carbon rather than funneling it outside,. This will remove grease and smell from the air. It's not as good as real ventilation, but it's used in e.g. some apartments etc where there's no good way of getting the air from cooking out.

        • No. The purpose is filtration of food fats and smells from the air. Nowadays the hood doesn't exhaust anything, and all hoods, even those bought to exhaust air will quote two airflow numbers, the second being for filtered recirculation.

          In any modern designed house there's a separate ventilation system for that, quite often the hood exhausts right next to the ventilation system and the ventilation system is designed to come on when you use the hood. But that's about it. If you want to get really technical it

          • That's interesting, because my house was built in 2019, and the hood has a duct that goes straight to the roof. It's a whirlpool brand, closely resembling this one:

            https://www.homedepot.com/p/Wh... [homedepot.com]

            It sounds like what you're referring to is a ductless hood, which technically isn't a hood, and they're also crap. But you probably won't listen to me anyways, so I'll just reference this:

            https://www.consumerreports.or... [consumerreports.org]

            This type of installation draws steam, heat, and smoke from the cooktop, filters it, and returns it to the room. Its filters trap oil and grease droplets dispersed into the air above the range, and some models include an optional carbon filter to reduce odors. We do not recommend ductless hoods, because they do not actually exhaust contaminants outside.

          • Oh and...

            exhaust to the outside but integrates into said ventilation system can dramatically reduce the size of the heat pump you need to heat a house.

            Typically I need to get rid of heat, not keep it, save for maybe three months of the year. At least, for that house anyways. The house I'm in right now is in an area where climate control generally isn't needed all that much.

            I spoke to a coworker recently in Redmond who had to learn how to use snow chains, and do some stuff or other with antifreeze in their pipes. All of that is entirely foreign to me.

        • by KlomDark ( 6370 )
          Cooks in the Hood
    • Not all vents are equal and this doesn't solve the problem for a variety of reasons:

      1. Old houses have hoods which a rubbish.
      2. Old houses where people have tried to reduce costs have hoods which fail to fight the pressure of closed windows during winter.
      3. New hoods don't exhaust outside (waste of energy removing warm air from the house), they recirculate with carbon filtration, and that won't remove benzene.
      4. Hoods are above the food. You're still standing between the flame and the hood while cooking (yo

      • by rossdee ( 243626 )

        " You're still standing between the flame and the hood while cooking"

        Don't forget to post video of that...

  • by khchung ( 462899 ) on Saturday June 17, 2023 @03:07AM (#63609712) Journal

    They found both natural gas and propane stoves "emitted detectable and repeatable levels of benzene that in some homes raised indoor benzene concentrations above well-established health benchmarks." The risks of benzene have long been known. The Centers for Disease Control and Prevention says the chemical is linked to leukemia and other blood cell cancers.

    So, we should be seeing more leukemia among chefs and kitchen staffs, who basically stay whole day in places where gas stoves are running. Where's the data confirming this?

  • Yup, we should stop drinking orange juice also. Not to forget apples that contain arsenic.
    • by gtall ( 79522 ) on Saturday June 17, 2023 @06:07AM (#63609934)

      Sodium benzoate (a preservative) and Vitamin C contribute to making orange juice. And the alternative is frozen orange juice concentrate. Unfortunately the FDA doesn't regulate s.b., and some orange juice contains 800% of what is considered safe.

      So yes, we should not drink the kind of orange juice that contains s.b., as well as soft drinks that contain it and Vitamin C.

      NiH has warnings about arsenic in apples, especially for infants.

      You seem to be advocating the U.S. Government get out of the business of protecting Americans' health and leaving it up to those nice corporations that can put a price on the number of lawsuits they can sustain while shipping dangerous products.

  • by lpq ( 583377 ) on Saturday June 17, 2023 @03:33AM (#63609750) Homepage Journal

    Sounds awfully convenient.

    The idea that using gas to generate electricity that's used to generate heat being more efficient is completely bogus since we can't ignore the inefficiencies of producing the electricity (and transmission) in the first place.

    There is no process that's more than 50% (more like ~30%) efficient to produce electricity. So using electricity can't ignore that its very inefficient to produce it in the first place.

    • by Pravetz-82 ( 1259458 ) on Saturday June 17, 2023 @04:49AM (#63609850)
      Gas turbines have more like 60+% efficiency. [archive.org]
      Also a gas stove is not nearly 100% efficient. A lot of the heat goes around the thing on top. An induction stove is closer to 100% than a gas one. This dude made some experiments and measured how long it takes to heat water by different means and how that affects the air quality https://www.youtube.com/watch?... [youtube.com]
      But maybe the biggest plus of electric stoves is that electricity can come from a variety of sources (some of which are clean), while gas only comes from one place and the exhaust only goes in the atmosphere.
      • That 60% efficiency is a max based on full load. It drops dramatically , under partial load.
        (https://www.wartsila.com/energy/learn-more/technical-comparisons/combustion-engine-vs-gas-turbine-part-load-efficiency-and-flexibility)

      • There was a time when I did have a gas stove, after having grown up with electric stoves due to no natural gas service available. I was surprised that the gas stove did not heat the larger pots any faster. The boundary layer alllows heat through to the pan less effectively than direct conduction from an old fashioned exposed burner.

        On the other hand the current stove tops are rubbish. Yes they are smooth and shiny any to clean, but they take forever to heat up and to cool down again.

        I haven't tried an induc

    • by holloway ( 46404 ) on Saturday June 17, 2023 @04:53AM (#63609856) Homepage
      A big problem with gas in the home is that the network is very leaky... see Oh boy do I love my gas stove [youtube.com]
  • by KlomDark ( 6370 ) on Saturday June 17, 2023 @03:42AM (#63609766) Homepage Journal
    Benzene has nothing compared to the danger that is Dihydrogen Monoxide, that's the really silent killer. It's in your house even if you cook with electric.
  • by greytree ( 7124971 ) on Saturday June 17, 2023 @03:54AM (#63609786)
    Writing "linked to cancer" suggests that this is another non-story.

    When they can state "Having a gas stove increases your chance of getting leukemia by 40%" or "Eating bacon increases your risk of bowel cancer by 30%" or "Being woke doubles your risk of clinical depression", THEN there's something there and people can assess the risks and take action.
    • by vyvepe ( 809573 )
      Percentage itself is not enough. You need also to know what is the probability of the base case against which the percentage is defined.

      Let's say getting an [uglyDisease] happens with probability of 1e-6. Let's say eating eggs increases the probability of [uglyDesease] by 30%. Well, it does not make sense the avoid eggs when your chance to get [uglyDesease] is only 1.3e-6 when you eat them.

  • by diffract ( 7165501 ) on Saturday June 17, 2023 @04:15AM (#63609822)
    is make everything run on electricity. They tried convincing us that stoves were bad for the environment even when they're turned off (sadly that's how stupid they think everyone is) https://www.latimes.com/enviro... [latimes.com]

    This probably failed which is why they're trying to link it to cancer now. When everything in your life runs on electricity, they have more control over you. Now when they cut off your electricity, they stop your ability to move (because you have an electric vehicle), they can cut you off from cooking and eating healthy (because your stove is now electrical).

    Resist this madness and keep your gas stoves and internal combustion engines.
    • Re: (Score:3, Informative)

      by rcb1974 ( 654474 )
      You're correct. The best thing humans can do is the opposite of whatever the WEF is pushing. Their goal is to divide, weaken, and subjugate the populace, then maximize their control and wealth they can extract from them. Their primary tool are their fiat currencies, which should be rejected whenever feasible. They despise rugged independent individuals who want smaller government and lower taxes.

      Natural gas and propane are awesome. They work when the grid goes down. Older gas appliances that don't co

  • by physicsphairy ( 720718 ) on Saturday June 17, 2023 @04:32AM (#63609836)

    The measurements were performed in tiny "houses" which were sealed to the outside. House 1 and House 2 (~100 m^2 in size), which produced the greatest results, had bedrooms immediately adjacent to the kitchen. The oven was left on for 1.5 hours. The most egregious emitting gas ovens were ~2 times the median emission (so what you should actually expect to get is ~ 1/2 the worst case the article reports).

    Excerpts from the paper:

    the long 8-h time course benzene concentrations reported in the section “Benzene Migration to Bedrooms” were measured in open kitchens (see Definitions above) in 6 different houses. We did not use fans or other means of active air circulation during the long 8-h time courses.

    As described below, when quantifying benzene emission factors (rates of benzene emitted per unit time), we closed kitchen doors and windows and sometimes sealed parts of the kitchen with plastic to limit the kitchen volume in order to measure the emission rates more accurately (see Figure S8). Throughout the paper, we refer to kitchens partitioned with any plastic as “sealed” kitchens and to kitchens with doors and windows closed but with no plastic sealing as “unsealed” kitchens. When we conducted our long 8-h time course measurements of concentrations in kitchens and bedrooms, we opened interior doors. We refer to these as “open kitchens”.

    To quantify the dispersion of pollutants from kitchens to bedrooms, we measured ambient benzene concentrations in bedrooms farthest from open kitchens of six houses (without using fans to mix the air) under a scenario with the oven set to 475 F for an hour and a half and then turned off while measurements continued for another 6.5 h. During these measurements, we kept interior doors open (see Figure S1 for floorplans of the houses). House 1 (90 m2) had a gas oven with the highest emissions that we measured, houses 2 (85 m2) and 3 (70 m2) had ovens with emissions between the mean and maximum, fueled by propane and gas, respectively, houses 4 (75 m2) and 5 (140 m2) had gas ovens with near-mean emissions, and house 6 (85 m2) had a gas oven with below-average benzene emissions. In all six cases tested, burner or oven use elevated peak bedroom benzene concentrations between 5 and 70 times above baseline levels and in some cases beyond the California OEHHA acute and chronic RELs

    So I guess it is possible that someone could experience these levels if they live in a tiny apartment, close all windows, turn off any heating/cooling, make something that takes > hour to cook, has one of the least efficient ovens, and continues to keeps their apartment sealed for the next 8 hours.

    There is also no precisely quantifiable risk here. Benzene is a carcinogen and it's believed more exposure is increasing your risk of developing cancer, but no one could tell you from this study that you are x% more likely to develop cancer because you cook twice a week on a gas stove. You are also likely exposed to benzene from other sources as well such as gasoline, wildfires, car exhaust, general air pollution, glues, paints, and detergents.

    The main take away should be that good ventilation while cooking is an easy precaution to minimize risk if you are cooking with gas or propane. Which was already a good idea for the CO/CO2. I would say very little reason to worry otherwise, at least based on this study.

  • How much of it remains if you use a hood to extract fumes while cooking? Found inconclusive answer in PDF: "Ventilation and hood use affect benzene concentrations [...] The comparison of hood-on high vs hood-off demonstrates that residential range hoods are not always effective at reducing pollutant concentrations, even if they vent outdoors" ... So how much is hardly mentioned, need to go into references and read the other study https://www.tandfonline.com/do... [tandfonline.com] ...

  • Stuff like this is facepalm-inducing. It's a bit fancier than getting worked up over dihydrogen monoxide. Benzene rings are in everything organic: amino acids (which means proteins) and a large proportion of the compounds responsible for the flavors and smells in food (aka esters) for starters.

    Because of that, free benzene has been floating around in the minute quantities described since life began. While large concentrations of benzene are bad, low concentration are not. Life on earth has evolved to dea

  • ...is that the federal government is simply building their case for what they want to do, using the camouflage of faked/twisted/contrived "science" to help that case.
    #followthescienceaslongasitsupportsideology

    Nothing like, say covid or climate change, of course.

    I 100% guarantee this will be quoted incessantly in Congress. You know, when they're "not coming for your gas stoves, silly!"

  • Here the in Silicon Valley, where Stanford is, Pacific Gas and Explosion has caused so many deaths due to negligence that no one trusts them with gas. Also, by phasing out gas for stoves it may be shipped in spherical tankers to Europe, who happens to need it. There might even be a bit of truth to the study, but if you don't question why it was done, you are a fool.
  • I may be misunderstanding but they say

    "We assume a temperature of 25 C and a pressure of 1 atm when converting between true concentrations and molar mixing ratios, which yields the conversion 1 ppbv benzene = 3.19 g benzene m–3."

    There tested upper bound of 12.5 micro grams would translate to about 0.004 PPMV which is well below the 1 PPM most safety orgs start to take notice and say you should do something.

    Additionally there was no ventilation in these test and no real world conditions tested

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