Health
Man dies after consuming too much vitamin D, experts warn of risks: 'Cascade of problems'
Amid reports of a U.K. man’s death from high amounts of vitamin D, experts are warning about the dangers of unsafe levels.
After 89-year-old David Mitchener died last year from hypercalcemia, a build-up of calcium in the body that is caused by excess levels of vitamin D, the Surrey assistant coroner released a report urging regulatory agencies to warn consumers about the risk of excessive intake.
Michener was admitted to East Surrey Hospital on May 10, 2023, and died 10 days later. Tests revealed that his vitamin D levels were at the maximum recordable level, according to the report from Jonathan Stevens, the assistant coroner.
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Vitamin D toxicity was listed as one of the factors in Michener’s death, along with congestive heart failure, ischemic heart disease, chronic kidney failure and hypercalcemia.
“David Mitchener had been taking vitamin supplements for at least the preceding nine months,” the report stated.
Experts are warning about the dangers of unsafe levels of vitamin D after a U.K. man died of excessive consumption. (iStock)
The supplements he was taking did not have any warnings on or in the packaging detailing the specific risks or side effects, according to the report.
“Vitamin supplements can have potentially very serious risks and side effects when taken in excess,” Stevens, the assistant coroner, wrote.
“Current food labeling requirements do not require these risks and side effects to be written on the packaging.”
What is a safe level of vitamin D?
For healthy adults, 600 international units (IU) of vitamin D (15 mcg) per day is all that’s necessary, according to Pieter Cohen, associate professor of medicine at the Cambridge Health Alliance in Massachusetts.
“Usually, this can come from fortified foods and sunlight,” he told Fox News Digital.
Some foods that are high in vitamin D include orange juice, rainbow trout, salmon, portabella mushrooms, yogurt, tuna and milk, according to WebMD. (iStock)
Some foods that are high in vitamin D include orange juice, rainbow trout, salmon, portabella mushrooms, yogurt, tuna and milk, according to WebMD.
Healthy people should not be taking more than 4,000 IU (100 mcg) per day, Cohen advised.
“Taking more than that can cause a cascade of problems, as vitamin D acts as a hormone in the body and too much of it can lead to a number of issues,” he warned.
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“Overdosages occur with taking much more — usually 60,000 international units a day or more.”
The amount of vitamin D required in the diet can also vary by age, according to Dr. Maryann Amirshahi, professor of emergency medicine at Georgetown University and co-medical director of the National Capital Poison Center in Washington, D.C.
“Vitamin D acts as a hormone in the body and too much of it can lead to a number of problems.”
“Smaller amounts (400 IU) are recommended in the first year of life,” she told Fox News Digital.
“For children older than 1 year of age, adolescents and most adults, 600 IU a day is recommended. The dose is the same for people who are pregnant or lactating.”
For older adults over age 70, an intake of 800 IU per day is recommended.
Dangerously high levels of vitamin D are almost always caused by consuming excessive amounts from dietary supplements, the NIH stated. (iStock)
“Higher doses are also recommended for individuals with vitamin D deficiency, with larger doses required for more severe deficiency,” Amirshahi added.
One common mistake is that some vitamin D prescriptions are dosed once a week, but people may accidentally take them daily, which can lead to toxicity, the doctor warned.
Symptoms of vitamin D overdose
Consuming too much vitamin D can lead to any number of symptoms that can be difficult to distinguish from other conditions.
These may include thirst, excessive urination and nausea, Cohen said — “but they can also be much more ominous, such as getting confused and becoming quite weak.”
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The main effect of vitamin D in the body is that it increases calcium concentrations, according to Amirshahi.
“The signs and symptoms of vitamin D poisoning are similar to people who have elevated calcium concentrations for other reasons,” she said. “The symptoms of elevated calcium levels in the blood include confusion, nausea, vomiting, abdominal pain, frequent urination and dehydration.”
“Symptoms of elevated calcium levels in the blood include confusion, nausea, vomiting, abdominal pain, frequent urination and dehydration.” (iStock)
The National Institute of Health (NIH) warns that “very high levels of vitamin D in your blood (greater than 375 nmol/L or 150 ng/mL) can cause nausea, vomiting, muscle weakness, confusion, pain, loss of appetite, dehydration, excessive urination and thirst, and kidney stones.”
It adds, “Extremely high levels of vitamin D can cause kidney failure, irregular heartbeat and even death.”
Toxicity of a dose may vary depending on a variety of factors, such as underlying medical problems like kidney disease, Amirshahi noted.
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“Another important factor is how long an individual is taking large doses of vitamin D,” she said.
“Often, a single large dose (50,000 to 150,000 IU, depending on the size of the individual) is well-tolerated, but chronic overdose can be much more dangerous.”
Dangerously high levels of vitamin D are almost always caused by consuming excessive amounts from dietary supplements, the NIH stated on its website.
“Extremely high levels of vitamin D can cause kidney failure, irregular heartbeat and even death,” the NIH warned. (iStock)
“Vitamin D toxicity has been caused by consumption of dietary supplements that contained excessive vitamin D amounts because of manufacturing errors, that were taken inappropriately or in excessive amounts, or that were incorrectly prescribed by physicians,” according to the agency.
“You cannot get too much vitamin D from sunshine because your skin limits the amount of vitamin D it makes.”
Treatments for overdose
If someone has overdosed, the immediate treatment is to stop taking the vitamin and to restrict dietary calcium, according to Mayo Clinic.
Some doctors may also prescribe IV therapy and medications, including corticosteroids or bisphosphonates.
If someone has overdosed, some doctors may also prescribe IV therapy and medications, including corticosteroids or bisphosphonates. (iStock)
“We can give a dose of activated charcoal in the emergency department if someone took a large single dose of vitamin D to help bind it before it gets absorbed by the intestines,” said Amirshahi.
This is only helpful if the person comes in early and ingests a single large dose, however.
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“Once the vitamin D has been absorbed, the main treatment is to address the high calcium levels,” she said. “This could include administering intravenous fluids or giving medications that lower the calcium concentration.”
In severe cases when other measures don’t work, dialysis may be used to help remove the calcium.
Experts call for warnings
Because vitamin D is sold as a dietary supplement in the U.S., it is not approved by the Food and Drug Administration (FDA).
“Vitamin supplements can have potentially very serious risks and side effects when taken in excess,” one doctor said. “Current food labeling requirements do not require these risks and side effects to be written on the packaging.” (iStock)
“Supplements can be sold at almost any dose the manufacturer decides to use, and the manufacturer is not required to place warnings on even the highest doses of vitamin D that it is dangerous to take too much,” Cohen told Fox News Digital.
“Supplements are often poorly manufactured as well, and the dose on the label might not be accurate,” he warned.
“Research of vitamin D supplements in the U.S. has revealed that sometimes you can get too little or too much vitamin D in the pills.”
To help ensure the proper amount in each pill, Cohen recommends only purchasing vitamin D supplements that have been certified by either USP (United States Pharmacopeia) or NSF International.
Fox News Digital reached out to David Mitchener (the assistant coroner in Surrey) and East Surrey Hospital requesting additional comment.
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There has been a shake-up in the Make America Healthy Again movement regarding glyphosate, a widely used herbicide that has been the subject of significant controversy.
The debate follows an executive order signed by President Donald Trump that ensures an adequate supply of elemental phosphorus and glyphosate-based herbicides related to national defense.
MAHA supporters have previously pushed a pesticide-free agenda, warning of potential health harms caused by glyphosate.
Dr. Marc Siegel, Fox News senior medical analyst, said he believes there is sufficient evidence linking glyphosate to neurodegenerative diseases, including ALS, Parkinson’s and multiple sclerosis, to warrant limiting exposure.
President Donald Trump signed an executive order that ensures an adequate supply of elemental phosphorus and glyphosate-based herbicides related to national defense. (AP Photo/Charlie Neibergall)
“With Parkinson’s, this association appears to be due to the gut, vagus nerve and brain axis, where the exposure affects the microbiome in the gut, which then ascends slowly up to the brain, causing the neurodegenerative disease years later,” Siegel told Fox News Digital.
“There is also a growing association being found between high-dose glyphosate or occupational exposure and metabolic disorders, liver disease and some cancers, specifically lymphoma.”
He added, “Growing research backs this. I favor limiting it.”
“When we apply them across millions of acres and allow them into our food system, we put Americans at risk.”
Studies have shown that glyphosate, which is used in products such as Roundup, owned by Monsanto, could raise cancer risk.
In one University of Washington study published in the journal Mutation Research, researchers found that exposure to it increased the risk of non-Hodgkin lymphoma by 41%.
The nonprofit Investigate Midwest, which analyzed data from both the U.S. Geological Survey and the National Cancer Institute, also recently found that pesticides may contribute to cancer rates.
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Among the top 500 counties for per-square-mile pesticide use, more than 60% had cancer rates above the national average of 460 cases per 100,000 people, according to the report.
Investigate Midwest, which is based in Illinois, interviewed more than 100 farmers, environmentalists, lawmakers and scientists as part of a partnership with the Pulitzer Center’s StoryReach U.S. Fellowship.
Among the top 500 counties for per-square-mile pesticide use, more than 60% had cancer rates above the national average of 460 cases per 100,000 people, according to one study. (iStock)
Iowa, which used 53 million pounds of pesticides last year, holds the nation’s title for second-highest cancer rate.
Bill Billings, a resident of Red Oak, Iowa, was diagnosed with cancer in 2014.
“The cancer specialist said, very directly, (my) cancer is a result of being exposed to chemicals,” Billings said in the report.
Kelly Ryerson, founder of Glyphosate Facts and owner of the Instagram account @glyphosategirl, told Fox News Digital her journey researching the herbicide began with her own health struggles.
Ryerson, who is based in California, previously struggled with chronic illness and autoimmune issues, which she said improved when she stopped eating gluten.
Iowa, which used 53 million pounds of pesticides last year, holds the nation’s title for second-highest cancer rate. (iStock)
After attending a medical conference at Columbia University’s Celiac Disease Center, Ryerson began to question modern farming practices rather than the gluten itself.
“A lot of times, farmers are spraying Roundup on our grains right before harvest to facilitate an easier harvest,” she said. “After that easier harvest, because everything’s dry at the same time, those crops go directly to the mill and may end up in our food supply, at alarmingly high levels.”
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In 2015, the International Agency for Research on Cancer (IARC), part of the World Health Organization framework, classified glyphosate as “probably carcinogenic to humans.”
The classification was based on limited evidence of cancer in humans (notably non-Hodgkin lymphoma in some studies) and sufficient evidence in experimental animals.
“President Trump’s executive order reinforces the critical need for U.S. farmers to have access to essential, domestically produced crop protection tools, such as glyphosate,” a Monsanto spokesperson said. (Wolf von Dewitz/picture alliance via Getty Images)
A spokesperson for Monsanto told Fox News Digital it will comply with Trump’s order to produce glyphosate and elemental phosphorus.
“President Trump’s executive order reinforces the critical need for U.S. farmers to have access to essential, domestically produced crop protection tools, such as glyphosate,” the spokesperson said.
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HHS Secretary Robert F. Kennedy Jr. has long been a vocal critic of Roundup, working with his legal team in 2018 to award $289 million to a man who alleged the weed killer caused his non-Hodgkin lymphoma, according to reports.
Following backlash to Trump’s executive order, Kennedy said he supports the order but acknowledged that “pesticides and herbicides are toxic by design, engineered to kill living organisms.”
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“When we apply them across millions of acres and allow them into our food system, we put Americans at risk,” he posted on X. “Chemical manufacturers have paid tens of billions of dollars to settle cancer claims linked to their products, and many agricultural communities report elevated cancer rates and chronic disease.”
Fox News Digital reached out to the White House for comment.
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Living near heavy traffic could negatively impact your heart health.
A European study, published in the journal Environmental Research, found that exposure to nighttime road traffic noise is linked to changes in the blood, leading to worsened cholesterol and cardiovascular risks.
The researchers considered data from the U.K. Biobank, Rotterdam Study, and Northern Finland Birth Cohort 1966, including more than 272,000 adults over the age of 30, according to a press release.
Nighttime road noise exposure was estimated at all participants’ homes based on national noise maps. Researchers also took blood samples to measure the participants’ metabolic biomarkers for disease, then mapped the link between nightly noise levels and existence of biomarkers.
Exposure to loud noise was associated with increased concentrations of cholesterol-related biomarkers. (iStock)
The study found that people exposed to louder noise at night — especially sounds above 55 decibels — showed changes in 48 different substances in their blood. Twenty of these associations “remained robust” throughout all cohorts.
Exposure to loud noise was associated with increased concentrations of cholesterol-related biomarkers, especially LDL “bad” cholesterol, IDL (intermediate-density lipoprotein) and unsaturated fatty acids.
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As noise levels increased, starting at around 50 decibels, cholesterol markers rose steadily, the release stated.
The authors concluded that this study “provides evidence that nighttime road traffic noise exposure from 50 dB upward is associated with alterations in blood cholesterol and lipid profiles in adults.”
Researchers noted a link between traffic noise and cardiometabolic disease. (iStock)
Study co-author Yiyan He, doctoral researcher at the University of Oulu in Finland, noted that in this type of research, small effect sizes are expected, and environmental exposures such as traffic noise are “typically modest.”
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“Despite this, we observed statistically robust and consistent associations across many biomarkers, especially those related to LDL and IDL lipoproteins,” she told Fox News Digital.
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“We also identified a clear exposure-response pattern starting at around 50 dB, suggesting that metabolic changes become more evident as noise levels increase.”
This aligns with public health guidance, as the World Health Organization recommends lower nighttime noise limits at around 40 to 45 dB, Yiyan He added.
“This finding may clarify the association between traffic noise and cardiometabolic diseases,” the researchers wrote. (iStock)
“The 55 dB level is often used as an interim benchmark associated with substantial noise annoyance and sleep disturbance,” she said. “In our study, we observed associations not only at 55 dB, but also indications of effects emerging at around 50 dB.”
The strength and consistency of the cholesterol-related associations were surprising, as these changes are usually “subtle.”
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“Instead, we found consistent associations across multiple large European cohorts, which strengthens confidence that the findings may reflect real biological patterns,” Yiyan He went on. “We were also interested to see that effects were minimal below ~50 dB, suggesting a possible threshold-like pattern.”
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The researcher noted that these findings were consistent across genders, education levels and obesity status.
The study was restricted to White Europeans, which posed a limitation. There was also a lack of information on the fasting status in the UK Biobank.
Changes in cholesterol levels were more severe than researchers expected. (iStock)
“Fasting can influence levels of certain metabolites, particularly fatty acids,” Yiyan He said. “However, based on UK Biobank documentation, fewer than 10% of participants were fasting for at least eight hours, and our main findings focused on cholesterol-related biomarkers, which are generally less sensitive to short-term fasting.”
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The researchers also lacked information on bedroom location, indoor noise exposure and time spent at home.
“These factors may introduce non-differential exposure misclassification,” Yiyan He said. “Additionally, noise exposure estimates were based on participants’ temporary residential addresses at the time of blood sampling, without considering the duration of residence.”
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“Many of these limitations would tend to bias results toward the null, so the consistent associations we observed remain noteworthy.”
Experts recommend taking measures to limit traffic noise at night. (iStock)
Based on this latest research, Yiyan He noted that nighttime noise is a “health-relevant exposure,” not just “an annoyance.”
“Our findings suggest that nighttime traffic noise may subtly but consistently affect metabolic health,” she said. “While the changes in cholesterol and lipid levels for any one individual are small, traffic noise affects a very large number of people, which means the potential public health impact could be substantial.”
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The researcher recommends taking measures like improving sound insulation, using noise-reducing strategies and placing bedrooms on the quieter side of the home when possible.
“Because sleep is a key pathway linking noise to health, protecting the nighttime sleep environment is especially important,” she added.
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