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    Home » Nutrition

    Are Multivitamins Worth it?

    By Catherine on February 17, 2019 Last Updated October 21, 2022 2 Comments | No Medical Advice | This Post Contains Affiliate Links

    Are Multivitamins Worth It? | Butter NutritionMultivitamins are at the core of mainstream nutrition, but the longer I work in the nutrition field, the more I think they're a part of the problem and not the solution. They're pushed as an "insurance policy" for extra nutrients to fill in an otherwise non-optimal standard American diet, which sounds like a good approach, right? I mean, who doesn't feel safer with insurance?

    Most people take one for the following reasons:

    • It makes them feel better about eating a less than stellar diet (truth: you can't out-supplement a poor diet)
    • It makes them feel like they are increasing their health in a positive way (truth: this has NOT been confirmed by science)
    • An authority figure recommends it, and they fear what will happen if they DON'T take one [truth: making decision out of fear is rarely the best choice]

    Are multivitamins worth it?

    In reality, even those who eat very healthily feel compelled, if not required to take them. Multivitamins have become a fear-based automatic habit. One that often doesn't fit the individual's needs... And if it doesn't fit your individual needs, is it possible it may be harming more than it's actually helping? That's exactly what I want to talk about today, so you can better evaluate your supplement plan going forward and see if your multivitamin is actually doing you any favors..

    Beware of these in your multivitamin...

    Beyond the often poor ingredient quality and non-therapeutic effect of multivitamins, there are some bigger problems to be aware of...

    1) Vitamin D

    Almost all multivitamins contain synthetic vitamin D3 which is a fat soluble vitamin and technically a hormone. Vitamin D supplementation tells your body to absorb more calcium from your food, so the presence of vitamin D in the bloodstream means that the person taking vitamin D supplements is going to absorb more calcium from their food than someone who isn’t taking vitamin D supplements. Interesting, right? So perhaps if you have low calcium levels, a little vitamin D might not be a huge problem. But what if you already have high calcium levels and don't even know it? Taking vitamin D, especially in higher doses can create chronically high calcium levels. Over time, it can lead to calcification of your body (like back pain, joint issues, osteoporosis). [7] Bottom line: find out what your body needs before blindly popping vitamin D3 supplements (hint: testing, vitamin D co-factors, natural sunlight).

    2) Calcium

    While you can find calcium abundantly in dairy products, bony seafood (think sardines), almonds, and leafy greens; calcium supplementation is still popular. Old-school nutrition knowledge is that calcium builds strong bones, but neglects to emphasize the other nutrients that are just as important in the process, namely — magnesium, vitamin K2, boron, and vitamin D. The research on calcium supplementation is not so great. A 2007 study in the American Journal of Clinical Nutrition found that:
    "Pooled results from prospective cohort studies suggest that calcium intake is not significantly associated with hip fracture risk in women or men. Pooled results from randomized controlled trials show no reduction in hip fracture risk with calcium supplementation, and an increased risk is possible." [17]
    And a 2017 study found:
    "...a rising body of evidence on the adverse effect of calcium supplementation on non skeletal, especially cardiovascular, health has been a cause for concern." [3]
    And while we're at it, it's important to point out that Vitamin D + calcium supplementation can create a perfect storm for increased calcium levels in the body. Bottom line: calcium from food is your friend, supplements may not be.

    3) Vitamin A and Beta Carotene

    What's the problem with Vitamin A and Beta Carotene? For starters, be aware that vitamin A toxicity is a real thing. Vitamin A has been long touted as a nutritional superstar, although it’s found in almost all foods but most abundantly in a whole foods diet. By policy, it was added to low-fat milk products in 1970’s. It’s also found in multivitamins, supplements (like cod liver oil), skin creams (especially anti-aging creams), sunscreen, and pharmaceutical drugs (like Accutane). [5,9] Depending on your health history of the above, vitamin A toxicity or excess may impact you, perhaps at much lower dosage levels than reported in scientific literature. [10] You see, 90% of vitamin A is stored in your liver, and released into the bloodstream on a as-needed basis. But what happens when your liver’s storage capacity is full? When the liver is already overwhelmed by vitamin A, it accumulates in tissues and fat storage leading to systematic inflammation, most specifically noted in changes to the skin, bones, and vision. [5] Vitamin A is also known to be teratogenic — capable of causing developmental malformations:
    "High dietary intake of preformed vitamin A appears to be teratogenic. Among the babies born to women who took more than 10,000 IU of preformed vitamin A per day in the form of supplements, we estimate that about 1 infant in 57 had a malformation attributable to the supplement." [12]
    Bottom line: vitamin A deficiency is rare in developed countries and vitamin A toxicity can lead to quite a lot of issues.

    4) Iron

    Iron is one of those tricky minerals that you don't want to have too much or too little of... If you have too little iron you're at risk for iron deficiency anemia which is associated with fatigue, dizziness, pale skin and shortness of breath, among others. Those who are the most at risk for anemia are menstruating women, vegetarians and those who donate blood frequently. [14,15] Excess iron on the other hand acts as a rusting agent in your body and can accumulate in tissues, particularly in the liver, pancreas, heart, joints and the brain. This speeds up the aging process and puts you at a much higher risk for vascular disease, cancer, and a shortened life expectancy. Iron overload is also linked to liver disease, cardiovascular disease, gout, infertility, hypothyroidism, and a very long list of others, making it essential for you to know your iron status. [13] Bottom line: know your iron status before supplementing with iron.

    5) Copper

    Supplementing with copper when you already have too much can cause big problems, particularly for the liver and your mental health. Copper is a mineral, a metal and an essential nutrient that impacts neurotransmitters in the brain. Specifically, copper lowers dopamine levels (think pleasure and reward centers in the brain) and increases the neurotransmitter norepinephrine, which acts as a stress hormone. Getting too much copper can decrease energy levels though adversely impacting thyroid activity, as well as mental well-being. Other symptoms include:
    • irritability
    • hyperactivity
    • academic underachievement
    • skin sensitivity to rough fabrics and metals
    • sensitivity to food dyes
    • sleep issues
    • high anxiety
    • ringing in ears
    • adverse reactions to copper (including multivitamins, chocolate, shellfish)
    • estrogen intolerance
    • poor stress control
    • premature graying of hair
    • abnormal menstrual cycles
    • hair thinning/loss
    • depression and postpartum depression
    Copper is pretty easy to find in the diet, especially for those who are on paleo-type diets that are avoiding grains and instead loading up on large amounts of nuts, seeds and chocolate. Bottom line: know your copper status before supplementing with copper.

    Multivitamins: Enough is Enough

    According to a 2013 article in the Annals of Internal Medicine, the debate about supplements should be over:
    "In conclusion, β-carotene, vitamin E, and possibly high doses of vitamin A supplements are harmful. Other antioxidants, folic acid and B vitamins, and multivitamin and mineral supplements are ineffective for preventing mortality or morbidity due to major chronic diseases. Although available evidence does not rule out small benefits or harms or large benefits or harms in a small subgroup of the population, we believe that the case is closed— supplementing the diet of well-nourished adults with (most) mineral or vitamin supplements has no clear benefit and might even be harmful. These vitamins should not be used for chronic disease prevention. Enough is enough." [6]
    A 2007 study in JAMA had similar findings:
    "Treatment with beta carotene, vitamin A, and vitamin E may increase mortality. The potential roles of vitamin C and selenium on mortality need further study." [16]

    Stop taking supplements that you don't need

    That's why I'm a big fan of skipping the multivitamin approach with my clients and taking a real-food supplement approach. You can learn more about my approach by watching the video below:
     

    (learn more)

    Instead, we collect data on their own nutrient levels and use a combination of food and food-sourced supplementation (with tiny doses!) whenever possible to support any identified deficiencies. And then let your otherwise healthy diet do the rest of the work. Here's a few other tips to keep in mind:
    • Avoid GMOs and non-organic foods that are contaminated with herbicides that are known to chelate mineral levels (specifically iron, cobalt, molybdenum, and copper) [8]. Eating organic and avoiding GMOs is the best way to reduce your intake of synthetic herbicides like Glyphosate.
    • Use testing to identify any nutritional deficiencies and use food + very small amounts of supplementation if needed for short periods of time to address any deficiencies.
    • Always listen to your body in the process and pay attention to how you feel whenever you introduce new foods or supplements.
    Ready to get your own custom food + supplement plan? Click here to get started.

    Are multivitamins worth it to you? Please share in the comments!

    Are Multivitamins Worth it Why I Don't Take One | Butter Nutrition
    Are Multivitamins Worth it Why I Don't Take One | Butter Nutrition References:
    1. https://mthfrgenehealth.com/mthfr-fqs/
    2. https://www.mthfrsupport.com.au/folic-acid-vs-5-mthf-debate/
    3. https://www.ncbi.nlm.nih.gov/pubmed/28466573
    4. https://ebm.bmj.com/content/ebmed/1/4/124.full.pdf
    5. https://ggenereux.blog/wp-content/uploads/2016/10/extinguishing-the-fires-of-hell2.pdf
    6. https://annals.org/aim/fullarticle/1789253/enough-enough-stop-wasting-money-vitamin-mineral-supplements
    7. https://academic.oup.com/cardiovascres/article/36/3/293/298591/Hypercalcemia-and-metastatic-calcification
    8. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3945755/
    9. https://ggenereux.blog/
    10. https://www.ncbi.nlm.nih.gov/pubmed/16469975
    11. https://www.merriam-webster.com/dictionary/teratogenic
    12. https://www.nejm.org/doi/full/10.1056/NEJM199511233332101
    13. https://chriskresser.com/iron-behaving-badly-the-role-of-iron-overload-in-metabolic-disease/
    14. https://www.webmd.com/a-to-z-guides/understanding-anemia-symptoms
    15. https://www.mayoclinic.org/diseases-conditions/iron-deficiency-anemia/symptoms-causes/syc-20355034
    16. https://jamanetwork.com/journals/jama/article-abstract/205797
    17. https://academic.oup.com/ajcn/article/86/6/1780/4649830
    18. Walsh, William J., PhD: Nutrient Power: Heal Your Biochemistry & Heal Your Brain, 2014.
    19. https://www.traceelements.com/Docs/Nutrient%20Interrelationships-Minerals-Vitamins-Endocrines.pdf
    20. https://www.traceelements.com/Docs/The%20Nutritional%20Relationships%20of%20Copper.pdf
    Also published on Medium.

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    About Catherine

    Hi there! I’m Catherine Crow. Seattle-based Functional Nutritional Therapy Practitioner (FNTP), Educator, Diet Investigator, and Coconut Milk Ice Cream Enthusiast. My goal is to help guide you to improve your nutrition through strategic eating (not dieting) and without expensive supplements. Because when you know better, you can feel better! Read more...

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    Reader Interactions

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    1. marcus flores

      January 29, 2020 at 2:54 pm

      i do not agree and i am terminating my subscription.
      regards.
      Marcus.

      Reply
      • Catherine

        January 29, 2020 at 8:33 pm

        Thanks Marcus for joining the conversation!

        Please feel free to share all your opinions and thoughts so we can have a good discussion.

        Abundantly,
        Catherine

        Reply

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