Magnesium is an essential mineral. However, having too much magnesium in the blood can be dangerous. The medical term for this is hypermagnesemia, and a magnesium overdose is one possible cause.

    The body needs magnesium for more than 300 biochemical processes.

    Magnesium blood levels of 1.7–2.3 milligrams per deciliter (mg/dl) are within the normal range, while levels above 2.6 mg/dl can indicate hypermagnesemia.

    Having too much magnesium in the blood is uncommon. It is more likely to occur in people with existing health conditions, such as kidney failure.

    Excessive dosage of supplements or medications can also cause hypermagnesemia.

    In this article, we discuss the risk factors and symptoms of a magnesium overdose. We also describe why getting enough magnesium from the diet and supplements is important.

    If the body has absorbed too much magnesium, a person may notice any of the following symptoms, which can range from mild to very severe:

    • lethargy
    • facial flushing
    • diarrhea
    • nausea
    • stomach cramps
    • vomiting
    • depression
    • muscle weakness
    • an irregular heartbeat
    • low blood pressure
    • urine retention
    • breathing difficulties
    • cardiac arrest

    Severe overdoses of magnesium are rare in otherwise healthy people. Getting too much magnesium from the diet is not typically a cause for concern.

    Occasionally, a high dosage of magnesium from supplements or medications can cause mild symptoms of an overdose, including diarrhea, nausea, and stomach cramps.

    The following forms of magnesium are most likely to cause these symptoms:

    • magnesium carbonate
    • magnesium chloride
    • magnesium gluconate
    • magnesium oxide

    Rarely, a very high dosage of a supplement or medication provides more than 5,000 mg of magnesium per day . This can cause magnesium toxicity. The medicines involved are typically laxatives or antacids.

    The kidneys clear excess magnesium from the body, and people with renal problems or kidney failure are more likely to absorb too much magnesium.

    Doctors usually advise people with this risk to avoid supplements and medications that contain magnesium.

    Share on Pinterest Kidney disease can increase the risk of a magnesium overdose.

    The risk factors for a magnesium overdose include :

    • having kidney disease
    • having other medical conditions, such as hypothyroidism , Addison’s disease , or gastrointestinal disorders
    • taking too many supplements or medications that contain magnesium

    The first treatment for hypermagnesemia is to stop consuming magnesium in supplements or medications. Other treatments include:

    • intravenous (IV) fluids
    • diuretics
    • dialysis

    If hypermagnesemia is severe, treatment may also involve intravenous calcium .

    Laxatives, in particular, often contain high levels of magnesium, due to its natural laxative effects. Although these medications provide more than the recommended amount of magnesium, the body usually does not absorb it all.

    For example, 1 tablespoon of Milk of Magnesia contains 500 mg of elemental magnesium. A daily dose for adults is up to 4 tablespoons per day, but the body excretes much of the magnesium because of the medication’s laxative effects.

    Some migraine medications also contain magnesium, as do some drugs for indigestion and heartburn . Only take a medication that contains magnesium with medical supervision.

    The body requires magnesium to stay healthy. It is essential for over 300 processes, including:

    • muscle function
    • nerve function
    • protein synthesis
    • bone formation
    • DNA synthesis
    • energy production
    • heart health
    • maintaining blood sugar levels
    • maintaining blood pressure

    Some studies suggest that magnesium may help treat or prevent:

    • high blood pressure
    • heart disease
    • type 2 diabetes
    • osteoporosis
    • migraine headaches

    However, confirming the effects of magnesium on these conditions will require more research.

    Magnesium deficiency, or hypomagnesemia, is much more common than hypermagnesemia, especially in otherwise healthy individuals. Some research indicates that 10–30 percent of people have low levels of magnesium.

    The Office of Dietary Supplements at the American National Institutes of Health recommend the following daily allowances of magnesium:

    • 400–420 mg for adult males
    • 310–320 mg for adult females
    • 350–360 mg during pregnancy

    Risk factors for magnesium deficiency include :

    • Crohn’s disease , celiac disease , and other gastrointestinal diseases
    • type 2 diabetes
    • alcohol use disorder
    • advanced age
    • certain medications, such as proton pump inhibitors and diuretics
    • being an adolescent female — on average, this group may receive less magnesium from the diet

    People can meet their magnesium needs through the diet and dietary supplements:

    Foods

    Share on Pinterest Black beans are a source of magnesium.

    Magnesium is present in many foods, including:

    • legumes, such as black beans and kidney beans
    • nuts, including almonds, cashews, peanuts, and peanut butter
    • whole grains, such as brown rice and oats
    • potatoes, when a person eats the skin
    • leafy green vegetables, such as spinach
    • fortified breakfast cereals
    • soy products, including soymilk and edamame
    • dairy products, such as milk and yogurt

    There is no need to limit the amount of magnesium in the diet if the body can excrete it through the kidneys.

    Supplements

    People can take supplements to meet their magnesium requirements. According to the Office of Dietary Supplements , most people in the United States do not get enough magnesium from their diets alone. However, by taking supplements, most people get more magnesium than necessary.

    To avoid an overdose, do not take more than 350 mg of magnesium a day.

    Topical magnesium sources

    Some believe that the body can absorb magnesium particularly well through the skin, in a process called transdermal absorption.

    For this reason, a person may try meeting their requirements by using Epsom salts or topical magnesium oils. However, little if any scientific research currently supports the idea.

    Magnesium is essential for well-being, but too much can cause problems, including digestive issues, lethargy, and an irregular heartbeat. In rare cases, a magnesium overdose can be fatal.

    Magnesium toxicity is rare in otherwise healthy people, and levels are more likely to be low than high.

    People with conditions affecting the kidneys are among those at risk of absorbing too much magnesium. The risk of death is highest in older adults with renal failure.

    A person is unlikely to overdose from magnesium in the diet, but supplements and medications can provide too much magnesium.

    Early diagnosis of a magnesium overdose is important. Treatment is usually effective if a doctor detects the overdose in an early stage.

    What does too much magnesium hurt you?
    What happens if I take too much magnesium? Taking high doses of magnesium (more than 400mg) for a short time can cause diarrhoea. There's not enough evidence to say what the effects might be of taking high doses of magnesium for a long time. more
    Can too much magnesium hurt you?
    What happens if I take too much magnesium? Taking high doses of magnesium (more than 400mg) for a short time can cause diarrhoea. There's not enough evidence to say what the effects might be of taking high doses of magnesium for a long time. more
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    Scaling and polishing is generally pain-free and the hygienist will do everything they can to make the treatment as comfortable as possible. If you have any discomfort, the hygienist can offer to use a local anaesthetic to counteract this. more
    Which is better magnesium citrate or magnesium?
    An older 2003 study of 46 adults found that magnesium citrate absorbed better than magnesium oxide and magnesium chelate. However, doctors also use magnesium citrate to treat constipation. For some people, this may mean it causes unwanted digestive side effects, such as diarrhea. more
    What's the difference between magnesium and magnesium glycinate?
    Magnesium is a mineral that's important to the health of the brain, heart, and skeletal muscles. Magnesium glycinate is the magnesium salt of glycine, an amino acid, and is the supplement most often taken to increase magnesium levels in the body. more
    What is the difference between magnesium citrate and magnesium glycinate?
    While there are many forms of magnesium available, we often prefer to use magnesium citrate and/or magnesium glycinate. Magnesium citrate is most helpful for people suffering from constipation, while the glycinate form is more useful for conditions like anxiety, insomnia, chronic stress, and inflammatory conditions. more
    Is yoghurt high in magnesium?
    Cultured yogurt is a nutrient-rich food that has 30 mg of magnesium per cup and is a great source of protein. Not to mention it contains omega-3 fatty acids, many vitamins and minerals, and gut-healthy probiotics. more
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    Can too much magnesium hurt you?
    What happens if I take too much magnesium? Taking high doses of magnesium (more than 400mg) for a short time can cause diarrhoea. There's not enough evidence to say what the effects might be of taking high doses of magnesium for a long time. more
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    Source: www.medicalnewstoday.com

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