The Hidden Risks of a Popular Supplement
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In recent years, magnesium supplements have become one of the most talked-about health trends. Social media is flooded with posts claiming that magnesium can improve mood, boost energy, and even help with sleep. For many older adults looking for natural ways to stay healthy, that kind of promise sounds hard to resist.
But doctors are now issuing a serious warning — magnesium isn’t safe for everyone. While it’s true that magnesium is an essential mineral that plays a vital role in heart health, nerve function, and bone strength, experts say that too much of it, or taking it under the wrong conditions, can do more harm than good.
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In fact, if you fall into either of these two groups, you should think twice before taking magnesium — or any supplement — without talking to your doctor first.
1. People With Kidney Problems Should Avoid Magnesium
Continue reading…For those with kidney issues, magnesium supplements can pose significant danger. The kidneys are responsible for filtering excess minerals from the body — and when they aren’t functioning properly, magnesium can build up to toxic levels in the bloodstream.
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According to medical professionals, this buildup can trigger a range of alarming symptoms:
Irregular heartbeat
Confusion or disorientation
Extremely low blood pressure
Weak or slowed breathing
In severe cases, even coma or death
As WebMD explains, people with impaired kidney function simply can’t clear magnesium efficiently. That means even small doses that are safe for most people can become dangerous.
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Doctors urge anyone with chronic kidney disease, reduced kidney function, or past kidney injury to avoid magnesium unless it’s specifically prescribed and closely monitored by a healthcare provider.
2. People Without a Magnesium Deficiency Don’t Need It
Continue reading…
This warning might surprise many: if you’re not deficient in magnesium, taking extra won’t give you extra health benefits.
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While magnesium deficiency is fairly common — estimates suggest that between 9% and 17% of adults, and up to 20% of teenagers, may have low magnesium levels — many people already get enough through diet. Foods like leafy greens, nuts, seeds, beans, and whole grains are rich sources of the mineral.
But despite the growing popularity of supplements, experts say that taking magnesium when you don’t need it is not only unnecessary — it can also cause uncomfortable side effects such as:
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Diarrhea
Nausea
Stomach cramping
Vomiting
Continue reading…And if taken in very high doses, those mild symptoms can progress to more dangerous reactions like an irregular heartbeat or low blood pressure.
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Dr. Noorhan Nassar, a primary care physician at Houston Methodist, explained:
“The data supporting benefits of magnesium supplementation in otherwise healthy adults isn’t complete. The results are mixed, and the design of many studies isn’t ideal.”
He also pointed out that magnesium is known to act as a natural laxative, which can cause digestive upset even at moderate doses.
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Simply put, if you aren’t deficient, magnesium isn’t likely to improve your health — and in some cases, it may make you feel worse.
