When the researchers conducted spatial learning and memory tests using the Barnes maze, the aspartame mice at four months consistently moved more slowly and covered less distance during training than animals in the control group. They also took nearly twice as long on average to locate the target escape hole, showing impaired memory recall (however, this was inconsistent and not seen as statistically meaningful). By eight months, performance gaps widened even further, with two out of six aspartame-treated mice failing to complete the task at all.

It makes you dumb, unfit and fat (around the organs).

  • Caveman@lemmy.world
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    17 hours ago

    Dosage matters so I crunched the numbers to get the Coke Zero equivalent.

    • Coke Zero has 85mg/355ml
    • Mice were dosed with 7mg/kg, 3 times per week
    • We assume humans are 75kg.

    Calculation

    • Human dose is 7mg/kg * 75kg = 525mg
    • 525mg / (85mg / 355ml) = 2193ml

    So it’s roughly same as drinking a 2L (half gallon) bottle. I expected it to be a lot bigger, not just something a regular soda lover would reach in 2 days.

  • melfie@lemy.lol
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    24 hours ago

    Back in the day, a soda was a special treat, but then it became something people drink like water. Then companies started putting ass-partame and other garbage in it so people could continue drinking dessert for hydration and supposedly not put on weight.

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    1 day ago

    My (long-since-ex) wife called it over twenty years ago, “That crap is worse than sugar.” Our kids didn’t get artificial sweeteners. (Nor did they get too much real sugar, we didn’t have fat kids.)

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    2 days ago

    We have an unfortunate monkey paw thing regarding this in the UK now then

    We introduced a sugar tax a few years ago to try and reduce the amount of sugar in food, it has been quite successful in that regard. However in many, many places, aspartame is the substitute ingredient.

    Most cases you can avoid given it’s generally unhealthier food, but I’m not a monk, so I’m going to consume junk on occasion.

    • Sturgist@lemmy.ca
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      18 hours ago

      Costco ONLY offers aspartame soda in their fountains, luckily you can buy a bottle of water for 60p more than a large soda!

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    2 days ago

    Before you take this to mean anything about why you should do, you are not a mouse. This is a study in mice and the differences between what impacts it will have in mice and humans may be very large. Mice are not good human analogues, but they are very cheap and good model organisms.

    The findings they report include weight loss and cardiac/neurological impacts. This appears to compound over time with worse impacts as the study continued. This would make sense if the impact of aspartame was a slow chronic toxin or inhibited some normal pathway. If it is the former then avoiding aspartame for mice is important at all times. If it is the latter then having a break every so often should ameliorate the damage, though how much and what time ratio is not tested here.

    That said, this is in mice. In my experience human brains a fairly different from mouse brains and the metabolic context is also quite different. I doubt the applicability of this to humans will be replicated well any time soon. If they do find an issue it is likely to be different to what happened to the mice, and though it is possible this will carry over to humans it is unlikely.

    • Caveman@lemmy.world
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      17 hours ago

      I agree, they’re not good humans and I’d love to get some more eyes on aspartame in light of this study. I did the math (and posted a comment on this post) and found out that the dose is equivalent to a 2L coke zero bottle so the dosage is applicable to how much humans get.

      It’s a classic more study needed and until we get a proper study without conflict of interest assessing human cognitive performance with a memory test after 8 months of drinking a 2L bottle of coke zero 3 times per week I’d recommend reducing the amount of aspartame drinks to at 0.5L or less 3 times a week.

      It’s not conclusive that it’s going to negatively affect humans and sugary alternatives are very likely still less healthy both cognitively and physically than the zero drinks.

    • Agent641@lemmy.world
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      2 days ago

      Also to point out, this doesn’t implicate any other artificial sweetemers. If you’re in Australia, the sweetenersight be listed by code rather than name:

      • rowinxavier@lemmy.world
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        2 days ago

        Also you will usually find 950 (aspartame) along with 951 (acesulfame K) because the two have slightly different profiles and work very well together. If we do a study on humans I would want it to include the common and also some uncommon combinations. A lot of people are switching over to erythritol and stevia but I don’t know how safe they are. We make erythritol internally but the dose may be quite different, and coming in through the gut could be quite different to internal production, not to mention with the stevia as actually prepared not lab purified.

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      I always tend to avoid stuff with the “Diet” or “sugar free” labels, just for this reason.
      And it didn’t require a study to convince me that random stuff that is not a part of nutrition, is better off being out of a regular diet.
      But it definitely takes a study to validate my concerns.

      • SaveTheTuaHawk@lemmy.ca
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        2 days ago

        The big problem with diet sodas is that the pancreas is activated by the taste of sweet, not just blood sugar levels. People drink gallons of this garbage a year and diabetes rates only go up.

        • ReluctantMuskrat@lemmy.world
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          2 days ago

          My understanding is this is just with sucralose. You can easily validate this yourself with a continuous glucose monitor. Diet sodas have their problems and the one in this article is particularly concerning but they don’t typically trigger insulin responses.

          • xep@discuss.online
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            1 day ago

            The continuous glucose monitor shows only glucose; I’d love a continuous insulin monitor.

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          2 days ago

          Fun little technicality. It won’t provide energy, fat or protein, but it does serve an important function nonetheless. Does that count as “value”? Depends on who you ask.

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            2 days ago

            The important function of artificial sweeteners is to make food taste good.

            • captainlezbian@lemmy.world
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              2 days ago

              And the important function of fiber is to provide satiation, as well as playing an important role in digestion.

              Artificial sweeteners are valuable for those who are unable to resist sweetness but need to reduce sugar intake, but fiber is actually an important nutritional component. People take fiber supplements for good reason.

              • Hamartiogonic@sopuli.xyz
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                2 days ago

                I’ve come to the conclusion that it’s not a good idea to test your willpower all the time. If your healthy lifestyle mostly depends on sheer willpower, you’re playing this game on hard mode.

                If you want to reduce your sugar intake, simply don’t fill the pantry with cookies, candy and cake. Buy healthy stuff instead. When sugar cravings strike, you don’t really have any unhealthy options available, so you’ll end up eating something better. Think of it like a framework that supports your desire to live a healthier life. Sooner or later, your willpower will fail you, but you won’t end up violating your long term goals too severely.

            • ulterno@programming.dev
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              2 days ago

              The important part of taste is to tell if food is good.

              Similarly for smell.
              Thanks to capitalistic food engineering, that doesn’t work very well.

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          Still a part of nutrition though, no?

          I’ll also take this opportunity to point out that taking just fibre is not particularly useful either.
          It only really makes sense when in conjunction with other substances in forms that come with traditional foods.

          • captainlezbian@lemmy.world
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            Eh fiber supplements can be massively beneficial. Yeah it’s better to get it naturally, but for those whose bodies need higher fiber than normal and those who aren’t willing to eat a naturally high fiber diet it’s a good option. There’s a reason some people swear by pscylium husk.

            • SaveTheTuaHawk@lemmy.ca
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              2 days ago

              Natural fiber foods have other critical nutrients that benefit the host, as well as positive effects on the microbiome.

              • Lumidaub@feddit.org
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                2 days ago

                I wasn’t asking about what else might be in foods that contain fiber though. Artificial sweeteners can also be in foods that also contain nutrients.

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        keeps taking a liter of coke on a daily basis. You are missing the point entirely. Sweeteners are here not for the people that can live without Sugar but for those we can’t.

        • ulterno@programming.dev
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          2 days ago

          I have a few kilograms of sugar right now and I use it when I feel like.
          Sugar maybe a sweetener, but not all sweeteners are sugar. Also, I don’t shy away from eating it when I feel like it.

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    2 days ago

    Over the course of the year-long experiment, the most significant changes were seen in how the brain processed energy. Using FDG-PET imaging, the researchers tracked glucose uptake across the whole brain as well as specific regions, and found that after only two months of intermittent aspartame intake, the mice had sharp rises here – roughly double that seen in the control group. And this effect was across the entire brain, suggesting it was burning more fuel in the early stages of the experiment. However, at around six months, this spike actually reversed, and at the 10-month mark, the brains of the aspartame-dosed mice were burning around 50% less glucose than the control group. Because the brain runs almost entirely on glucose – to fuel processes like the firing of neurons and maintaining circuits linked to memory and learning – aspartame appeared to be robbing the organ of what it needs to function smoothly.

    Were they getting enough glucose in addition to the aspartame? The article didn’t make it clear whether we’re seeing the effects of aspartame or just hypoglycemia.

    • MalReynolds@slrpnk.net
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      Were they getting enough glucose in addition to the aspartame? The article didn’t make it clear whether we’re seeing the effects of aspartame or just hypoglycemia.

      The liver will happily make enough glucose for the human brain from fat and protein, let alone the mouse brain (gluconeogenesis). It’s not true that the human brain requires glucose, just a couple of cell lines (obligate glucovores), like red blood cells and some parts of the eye. The rest of the body, including the brain, can use ketones derived from fat, muscles can use triglycerides directly, in fact as we age the brain preferentially uses ketones. Here mouse models fail because they’re evolved as primarily carbovores (grains etc, although they do eat (low fat) insects for extra protein) and really, really hard to get into ketosis, while humans drop into it with 12 hours fasting. Which makes this study an interesting datum, but inconclusive (and likely false in detail) in humans. That said, seems like a no brainer to drop artificial sweeteners and limit sugar to me, evolutionarily we got a big burst at the end of summer (fruit) which we used to fatten up for winter and little the rest of the year.

      TLDR: “Mice lie and monkeys exaggerate.”

      • pr0sp3kt@lemmy.dbzer0.com
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        1 day ago

        Fruit is bad, apple is like sand with splenda, you need to buy the expensive kind of grapes and oranges, or else tastes like so fckn acid. Bananas are ok as long as you eat with bread and are on point, the same as watermelon, but a lot of em needs more sugar.

    • SaveTheTuaHawk@lemmy.ca
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      2 days ago

      Mouse metabolism is nothing like human metabolism. Over reliance on mouse models has wasted billions and decades in science, and generated bullshit artifacts.

      • xep@discuss.online
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        Still think rabbit studies win the bullshit artifact prize since they are the basis of the diet heart hypothesis.

    • angband@lemmy.world
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      Throughout the experiment, the mice were fed standard chow (SAFE® A03 rodent chow from SAFE), and the control group was provided with normal, unadulterated drinking water, while the aspartame treated group received 0.4 % (w/v) aspartame (Tokyo Chemical Industry, CAS 22839–47–0, purity ≥) three days every two weeks, which equated to an average daily human equivalent dose of approximately 7 mg/kg/day [20]

      • rothaine@lemmy.zip
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        17 hours ago

        average daily human equivalent dose of approximately 7 mg/kg/day [20]

        That’s quite a bit. A can of Coke Zero has 85mg of aspartame. So for someone who weighs 68kg, they would need to drink a six pack a day to get to this dose.

        Diet Dr Pepper has 180mg per can, so that’s a bit more alarming.

        • angband@lemmy.world
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          12 hours ago

          Yeah, I have only known a few people who drink that much soda, it is a lot. But AceK is in tons of foods now, like kirkland whey protein and low carb stuff.

      • Hamartiogonic@sopuli.xyz
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        1 day ago

        As in, a carbon backbone with plenty of hydrogen everywhere, maybe a few functional groups here and there.

          • Hamartiogonic@sopuli.xyz
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            9 hours ago

            Just took Look at the formula of aspartic acid (the amino acid) and aspartame (the artificial sweetener) and they are vastly different. What’s your point?

            • surewhynotlem@lemmy.world
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              45 minutes ago

              Your stomach breaks down aspartame directly into phenylalanine and aspartic acid. It’s just the two glued together.

              Unless the claim is that you’re absorbing aspartame through your esophagus lining?

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        Bullshit. There is no moderation on sugar intake and that’s when aspartame could enter. Not totally but partially cutting sugar. You have to be realistic in life no one is willing to resign coke life or cakes.

        • CarbonatedPastaSauce@lemmy.world
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          Uhhh what?

          I quit drinking soda years ago and switched to flavored seltzer water. I was drinking 4-6 sodas a day for years before that.

          For me quitting sugar was only difficult for the first few days, until whatever was in my gut crying for it died off I guess.

          Just have to want to do it, like anything else that requires willpower.

          • pr0sp3kt@lemmy.dbzer0.com
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            Just because you maybe do it, it doesn’t mean that everyone is willing, or can, or will, or will be the same experience. Your personal case doesn’t extrapolate to the big number.

              • pr0sp3kt@lemmy.dbzer0.com
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                I am saying YOUR experience can’t be extrapolated to all people, and second, we are missing the point that is the cost/benefit of sugar vs sweeteners.

                • CarbonatedPastaSauce@lemmy.world
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                  You have to be realistic in life no one is willing to resign coke life or cakes.

                  That’s not what you’re saying.

                  Edit: Also, nobody’s experience can be extrapolated to all people. What a ridiculous idea. But there are plenty of people who are able to give up consuming excess sugar. Just because you can’t, doesn’t mean that extrapolates to all people.

    • SaveTheTuaHawk@lemmy.ca
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      The pancreas is activated to produce insulin by first the sense of taste and sweetness, then by blood sugar levels.

      This is why since the large scale adoption of synthetic sweetners, diabetes rates of skyrocketed. People don’t even drink water now in US.

    • pr0sp3kt@lemmy.dbzer0.com
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      Wow, so why are you alive to start with to have such sad life, imagine cutting all sweet. I prefer to be dead.

      • Hamartiogonic@sopuli.xyz
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        Well, I was mainly thinking of that in terms of cutting back, not forbidding them entirely. Eating sugary things all the time will obviously cause obesity, but eating artificially sweetened things seem to come with some serious caveats too. Not too long ago, I stumbled upon a similar post about erythritol, then another one about xylitol and so on. The list of sweeteners is getting shorter…

          • Hamartiogonic@sopuli.xyz
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            Other people can do whatever they want. I’m not here to tell them what to do or how to live. It’s your body, your responsibility. You’re the one who benefits from good decisions and suffers the consequences of bad ones.

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              “Other people can do whatever they want”. This is not a valid standpoint. We were talking about possible cost/benefit options to sugar, and yet your solution is just take less.

              • Hamartiogonic@sopuli.xyz
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                2 days ago

                Are we crafting public health policy or making personal life choices here? What’s at stake determines the course of action. What’s reasonable for me to recommend myself may not apply to broader audiences, let alone special groups.

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      Problem with humans is that due to the pesky human rights laws, it becomes exceedingly difficult to fully control their food intake and normalise any other variables that may cause similar effects.

      But as long as those laws don’t prevent us from normalising the usage of our products in the society, that’s all well. Even better, if someone does such a study on humans, we can simply state “other variables” to invalidate those studies and it shouldn’t affect our revenue streams too much.