Do Probiotics Work For Weight Loss?

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It’s Q&A Day at 10almonds!

Have a question or a request? We love to hear from you!

In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!

As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!

So, no question/request too big or small

❝Can you talk about using probiotics for weight loss? Thanks❞

Great question! First, a quick catch-up:

How Much Difference Do Probiotic Supplements Make, Really?

Our above-linked article covers a number of important benefits of probiotic supplements, but we didn’t talk about weight loss at all. So let’s examine whether probiotics are useful for weight loss.

Up-front summary: the science is unclear

This 2021 systematic review found that they are indeed very effective:

❝The intake of probiotics or synbiotics could lead to significant weight reductions, either maintaining habitual lifestyle habits or in combination with energy restriction and/or increased physical activity for an average of 12 weeks.

Specific strains belonging to the genus Lactobacillus and Bifidobacterium were the most used and those that showed the best results in reducing body weight.

Both probiotics and synbiotics have the potential to help in weight loss in overweight and obese populations.❞

Source: Effects of Probiotics and Synbiotics on Weight Loss in Subjects with Overweight or Obesity: A Systematic Review

This slightly older (2015) systematic review and meta-analysis found the opposite:

❝Collectively, the RCTs examined in this meta-analysis indicated that probiotics have limited efficacy in terms of decreasing body weight and BMI and were not effective for weight loss.❞

Source: Probiotics for weight loss: a systematic review and meta-analysis

And in case that’s not balanced enough, this 2020 randomized controlled trial got mixed results:

❝Regression analysis performed to correlate abundance of species following supplementation with body composition parameters and biomarkers of obesity found an association between a decrease over time in blood glucose and an increase in Lactobacillus abundance, particularly in the synbiotic group.

However, the decrease over time in body mass, BMI, waist circumstance, and body fat mass was associated with a decrease in Bifidobacterium abundance.❞

Source: Effects of Synbiotic Supplement on Human Gut Microbiota, Body Composition and Weight Loss in Obesity

Summary

Probiotics may or may not work for weight loss.

In all likelihood, it depends on the blend of cultures contained in the supplement. It’s possible that Lactobacillus is more beneficial for weight loss than Bifidobacterium, which latter may actually reduce weight loss.

Or it might not, because that was just one study and correlation ≠ causation!

We’d love to give you a hard-and-fast answer, but if the data doesn’t support a hard-and-fast answer, we’re not going to lie to you.

What we can say for sure though is that probiotics come with very many health benefits, so whether or not weight loss is one of them, they’re a good thing to have for most people.

Some further articles that may interest you:

Take care!

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    When comparing broad beans to sweetcorn, we picked the broad beans.

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    Firstly, you may be wondering: “aren’t broad beans fava beans?”, and yes, yes they are, but by convention, broad beans are the young green beans, while fava beans are the mature beans of the plant. Similar situation to the relationship between edamame and soybeans. And, in both cases, you’re more likely to put the young green beans in a salad, thus making the broad beans the more reasonable vegetable to compare to the sweetcorn. On which note…

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    (we suggest you read everything at least once before doing anything)

    1) Wash the rice thoroughly. We recommend using a made-for-purpose rice-washing bowl (like this one, for example), but failing that, simply rinse it thoroughly with cold water using a bowl and a sieve. You will probably need to rinse it 4–5 times, but with practice, it will only take a few seconds per rinse, and the water will be coming up clear.

    2) Warm the pan. It doesn’t matter for the moment whether you’re using an electronic rice cooker, a stovetop pressure cooker, electronic pressure cooker, or just a sturdy pan with a heavy lid available, aside from that if it’s something non-stovetop, you now want it to be on low to warm up already.

    3) Separately in a saucepan, bring your stock to a simmer

    4) Put the tbsp of olive oil into the pan (even if you’re confident the rice won’t stick; this isn’t entirely about that) and turn up the heat (if it’s a very simple rice cooker, most at least have a warm/cook differentiation; if so, turn it to “cook”). You don’t want the oil to get to the point of smoking, so, to test the temperature as it heats, flick a single drop of water from your fingertip (you did wash your hands first, right? We haven’t been including that step, but please do wash your hands before doing kitchen things) into the pan. If it sizzles, the pan is hot enough now for the next step.

    5) Put the rice into the pan. That’s right, with no extra liquid yet; we’re going to toast it for a moment. Stir it a little, for no more than a minute; keep it moving; don’t let it burn! If you try this several times and fail, it could be that you need a better pan. Treat yourself to one when you get the opportunity; until then, skip the toasting part if necessary.

    6) Add the chia seeds and spices, followed by the stock, followed by the yeast extract. Why did we do the stock before the yeast extract? It’s because hot liquid will get all the yeast extract off the teaspoon 🙂

    7) Put the lid on/down (per what kind of pan or rice cooker you are using), and turn up the heat (if it is a variable heat source) until a tiny bit of steam starts making its way out. When it does, turn it down to a simmer, and let the rice cook. Don’t stir it, don’t jiggle it; trust the process. If you stir or jiggle it, the rice will cook unevenly and, paradoxically, probably stick.

    8) Do keep an eye on it, because when steam stops coming out, it is done, and needs taking off the heat immediately. If using an automatic rice cooker, you can be less attentive if you like, because it will monitor this for you.

    Note: if you are using a simple pan with a non-fastening lid (any other kind of rice cooking setup is better), more steam will escape than the other methods, and it’s possible that it might run out of steam (literally) before the rice is finished. If the steam stops and you find the rice isn’t done, add a splash of water as necessary (the rice doesn’t need to be submerged, it just needs to have liquid; the steam is part of the cooking process), and make a note of how much you had to add (so that next time you can just add it at the start), and put it back on the heat until it is done.

    9) Having taken it off the heat, let it sit for 5 minutes (with the lid still on) before doing any fluffing-up. Then you can fluff-up and serve, adding the garnish if you want one.

    Enjoy!

    Want to learn more?

    For those interested in some of the science of what we have going on today:

    Take care!

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