Assume the smoothies have the same nutrient profile as a regular diet. Like if you drank runny mashed potatoes and protein powder to simulate a normal food intake.

If you do poop because of the nutrients, is there a healthy diet at which waste products are no longer left in the intestine to turn into poop?

Drag has no intention of doing this, drag is just curious about the science.

  • southsamurai@sh.itjust.works
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    5 hours ago

    Sorry mate, there is no current way to eat without eventually needing to poop and remain healthy.

    Best case scenario, you can figure out an IV nutrition regimen and end up not pooping poop, while your intestines are damaged through non use. You’ll likely suffer immensely if you ever decide to eat again.

    Even then, things will still come out of you. Patients with extreme starvation, regardless of cause, still produce some intestinal mucosa. That stuff can and will eventually come out in small amounts.

    See, the gut atrophies when it isn’t being used. It takes a while to reach that point, but it’s inevitable, no matter how well you keep up with IV feeding

    In terms of smoothies, there’s ways to feed people through a tube when they can no longer eat. The products that are used for that minimize waste, but there’s still poop of some kind. So any smoothie you make yourself is also going to contain enough content that’s indigestible that you’ll poop eventually unless you take care to balance the soluble and insoluble fiber in the smoothie, you’ll end up with smoothie poop. In other words, it comes out in a very similar state of fluidity as it went in. It takes some effort to build a smoothie recipe that doesn’t have skewed proportions of fiber.

    And if you want to have a healthy body, you can’t just let the intestines atrophy at all. The inflammation and other secondary issues that come with gut atrophy can’t be called healthy by any stretching of the term. So even IV feeding isn’t healthy, no matter how well done it is.

    I’m trying to remember exactly how far into IV feeding you run into atrophy issues though. There was a fairly famous case of a man that was on an IV feeding plan to lose weight, but with the recent discovery of wegovy and related drugs for weight loss, there’s too damn many hits to sort through to find any of that info. But his case did include intake of low/no calorie intake orally to prevent that atrophy, I just can’t remember the details of what did happen to his gut health. I know he had at least a few months where he had trouble after resuming eating, but I’m damned if I can remember any details.

    I’m fairly certain you could minimize pooping with oral nutrition that lacks any products that would form waste in the digestive tract though. It wouldn’t be a smoothie, since that’s pureed food; and it wouldn’t be healthy long term for all of the above reasons regarding the gut. But you might be able to work with specialists and figure out how to keep things from becoming so detrimental as to be inherently harmful. You’d definitely need a team though, I don’t think any single specialty in medicine would cover all of the knowledge necessary to make it work long term.

  • NegativeInf@lemmy.world
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    7 hours ago

    Smoothies with a proper dietary balance still have fiber. So yeah.

    But even beyond that, waste products from the gut microbiome, and left over bits that the body doesn’t use. Best case scenario, you would have small, liquid poops.

    Your best bet? Intravenous feeding. Not that Drag has any intention of doing this.

      • jol@discuss.tchncs.de
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        3 hours ago

        Fiber mostly feeds the bacteria in your digestive system and they play an important role in digestion, and general well being.

      • ZephrC@lemm.ee
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        6 hours ago

        Fiber doesn’t actually have any nutritional value. It functionally just scrubs your intestines when you eat it. If you don’t have enough fiber it can cause very weird digestive issues as strange things build up in your guts.

        • NegativeInf@lemmy.world
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          5 hours ago

          Well, physical scrubbing, sure. But also, specific fibers are required for a healthy gut microbiome to function and maintain a proper balance of microbes that produce other micronutrients that your body cannot make on its own as well as fending off the types of microbes that subsist of sugars and fats alone.

          • NoneOfUrBusiness@fedia.io
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            4 hours ago

            Adding to what they said, without fibers your shit will be liquid and runny, because it’s fibers that give rigidity to it.

      • VaalaVasaVarde@sopuli.xyz
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        6 hours ago

        The task for dietary fibers is to give volume in the colon and give the peristaltic muscles something to do.

        They have limited nutritional value.

          • VaalaVasaVarde@sopuli.xyz
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            5 hours ago

            It’s the optimal for our digestive system, of course in some cases like in the hospital or nursing home people have trouble with getting the correct diet they then get laxatives to help.

            • Dragon "Rider"(drag)@lemmy.nzOP
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              44 minutes ago

              That’s not actually an answer. “It’s needed because it’s optimal”, that doesn’t explain any science. Drag wants to know the science.

  • 🇰 🌀 🇱 🇦 🇳 🇦 🇰 ℹ️@yiffit.net
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    5 hours ago

    Yes. But it would be the same consistency coming out as it went in eventually. Unless your body uses 100% of what goes in, you’ll always poop. And since you can’t absorb 100% of what you take in, even if you only take in what you need, you will never not poop unless you stop eating entirely. And you wouldn’t not poop while alive very long until you’re not pooping while dead.

  • CameronDev@programming.dev
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    7 hours ago

    Tangentially related, but when I switched my cat from commercial cat food to a raw chicken (w/ supplements) diet, her poops went from very bulky once a day, to shrivelled poops every-other day.

    The amount of water in the chicken, and the lack of bulking ingredients made a huge difference.