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    Home » Learn About Paleo & Keto Diets

    4 Vitamins and Minerals to Watch for Gut and Digestive Health

    Last Modified: Jan 18, 2023 by Paleo Leaper · This post may contain affiliate links · Leave a Comment

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    If your digestion is giving you trouble, it can seem like everyone is giving you a new piece of advice everywhere you turn. More fiber – no, less fiber – no, just eliminate FODMAPs and you’ll be fine with other types of fiber. Probiotics – no, prebiotics – no, symbiotics – no, digestive enzymes...

    So what do you need with one more list of things to worry about? Other than the hope that it might help you resolve your issues? The selling point of this list is that you have nothing to lose. You should be able to tell right away if any of the deficiencies apply to you –– and if you think they do, the solution is cheap and easy: no tests to run, no supplements to buy, just minor diet changes.

    If nothing on this list applies to you, you’ve spent 10 minutes of your life eliminating a potential problem and you can go on your way with peace of mind.

    Iron

    Iron is important for gut health because it helps support the gut bacteria. In this study, iron supplementation increased the number of gut bacteria and also increased a beneficial anti-inflammatory bacterial metabolite (butyrate).

    Iron deficiency might be your problem if…

    • You’re a woman with regular menstrual periods.
    • You don’t eat much red meat or egg yolk.
    • You have Crohn’s Disease or another malabsorptive digestive disorder.

    If this is your problem, eat more…

    • Red meat
    • Egg yolk
    • Seafood

    Spinach and other plant foods aren’t as good, because they contain a form of iron that is less absorbable.

    A note on supplements: iron is an interesting nutrient because some people have too much of it (mostly men) and some people don’t have enough (mostly women who are pregnant or having regular periods). If you have too much iron, iron supplements can be dangerous. So see a doctor for blood tests before you start supplementing.

    Selenium

    This review looks at the critical role of selenium in gut health. Selenium affects the gut flora, and helps modify the inflammatory response in the gut. Selenium deficiency increases inflammation and oxidative stress, and the resulting damage to the lining of the gut can actually contribute to abnormal intestinal permeability (“leaky gut”).

    Selenium deficiency is associated with a higher risk of Inflammatory Bowel Disease (including Crohn’s Disease and Ulcerative Colitis).

    This might be your problem if:

    • You don’t eat a lot of fish or seafood
    • You have a pre-existing gut disorder like IBS or IBD
    • You have thyroid problems

    If this is your problem, eat more…

    • Fish, especially salmon and tuna
    • Brazil nuts (even 1 Brazil nut/day is plenty)
    • Shrimp
    • Mushrooms

    You can read more about selenium and the gut (and the thyroid!) here.

    Vitamin DSun

    The “sunshine vitamin” is a very common deficiency because even if you eat really well, you might still not be getting enough of it if you don’t get any high-quality sun exposure.

    Lower Vitamin D is linked to Inflammatory Bowel Disease, and Vitamin D supplements show significant promise for treating symptoms. There are several different reasons for that, but one of them is the way Vitamin D affects the gut flora. This is even more obvious in mice: Vitamin D knockout mice get very unhappy gut flora very fast.

    This might be your problem if:

    • You rarely go out in direct sunlight, or you always wear sunscreen when you do (sunscreen blocks vitamin D).
    • You rarely eat wild-caught fatty fish like salmon or mackerel.
    • You have darker skin

    If this is your problem…

    • Go out in the sunshine!
    • Eat more wild-caught fatty fish, especially salmon. White fish doesn’t count, because it doesn’t have enough fat.

    Zinc

    Zinc is important for producing digestive enzymes. A new study found that even a very mild and temporary zinc deficiency can back up the digestive system and reduce enzyme production.

    This might be your problem if…

    • You’re rarely hungry or feel like you have a low appetite compared to everyone else (because of the way it backs up your digestion, zinc deficiency can make you feel “full” for an unusually long time)
    • You eat a very large amount of fiber (fiber reduces absorption of zinc)
    • You have a malabsorptive digestive disorder or parasite infection.
    • You have diabetes (diabetes causes increased losses of zinc)

    If this is your problem, eat more…

    • Oysters (just 1 oyster = 83% of your daily zinc needs)
    • Lean beef
    • Liver (beef or pork)
    • Lamb

    If you can pick out any theme from these four nutrients, it’s the importance of nutrient-dense animal foods and seafood. Red meat, liver, salmon, and other sea foods just keep showing up again and again. These foods are good for us, and replacing them with whole-wheat crackers and black bean burgers just isn't the way to go.

    By the way, if you’re looking for stuff like probiotics and prebiotics – those aren’t in this list because they aren’t technically vitamins or minerals. But you can find information about probiotics here, prebiotics here, and digestive enzyme supplements here.

    Is there a nutrient that made all the difference for your gut health? Let us know on Facebook or Twitter!

    More Learn About Paleo & Keto Diets

    • Dealing With Constipation
    • What’s Wrong with Beans and Legumes?
    • The User-Friendly (Paleo) Guide to Your Immune System
    • 10 Paleo Resolutions that Aren’t about Weight Loss

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