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Gadolinium-based MRI contrast agents may form toxic nanoparticles in the body

A University of New Mexico study shows gadolinium from MRI contrast dyes can react with oxalic acid (from diet: spinach, nuts, chocolate, vitamin C) to form toxic gadolinium-oxalate nanoparticles that accumulate in organs like kidneys and brain, potentially triggering inflammation or nephrogenic systemic fibrosis.

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1 Source, 6h ago, first seen 6h ago

TLDR

MRI scans are routine medical procedures, making safety concerns about widely used contrast agents highly relevant. The findings explain mysterious retention cases and tie into ongoing debates about gadolinium safety. The research suggests metabolic and dietary factors influence risk, enabling practical precautions like dietary adjustments before scans and better patient screening protocols.

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Combined views

17.4K

1 Source, first seen 6h ago

89 likes6 comments107 saves54 reposts

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1 Source

@SmartScienceA new study reveals toxic heavy metal nanoparticles can form in patients receiving MRIs: A study led by researchers at the University of New Mexico has shed light on a troubling medical mystery: how contrast dyes injected before MRI scans can leave behind dangerous metal particles in the body. For decades, doctors have used gadolinium-based contrast agents to enhance scan clarity, reassuring patients that the toxic heavy metal is safely filtered out. However, scientists have recently discovered that gadolinium can react with oxalic acid—a naturally occurring compound in the human body that is also abundant in foods like spinach, nuts, chocolate, and certain vitamin C supplements—causing the metal to precipitate out. This chemical reaction triggers the formation of toxic gadolinium-oxalate nanoparticles inside human cells. These metallic shards can infiltrate organs, including the kidneys and brain, and persist years after a scan, sometimes sparking severe inflammatory responses. In rare cases, this buildup can lead to nephrogenic systemic fibrosis, a painful and potentially fatal disease characterized by the thickening and hardening of the skin and internal organs. While only a small fraction of patients experience adverse side effects, this discovery suggests that a patient's metabolic state and diet could make them vulnerable to toxicity. Experts are now exploring ways to screen patients before scans, and some recommend avoiding high-oxalate foods and vitamin C supplements prior to receiving MRI contrast. source: Henderson, I. M., Benevidez, A. D., Mowry, C. D., Watt, J., Bachand, G. D., Kirk, M. L., Dokładny, K., DeAguero, J., Escobar, G. P., & Wagner, B. Precipitation of gadolinium from magnetic resonance imaging contrast agents may be the Brass tacks of toxicity. Magnetic Resonance Imaging.6h
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    @SmartScienceA new study reveals toxic heavy metal nanoparticles can form in patients receiving MRIs: A study led by researchers at the University of New Mexico has shed light on a troubling medical mystery: how contrast dyes injected before MRI scans can leave behind dangerous metal particles in the body. For decades, doctors have used gadolinium-based contrast agents to enhance scan clarity, reassuring patients that the toxic heavy metal is safely filtered out. However, scientists have recently discovered that gadolinium can react with oxalic acid—a naturally occurring compound in the human body that is also abundant in foods like spinach, nuts, chocolate, and certain vitamin C supplements—causing the metal to precipitate out. This chemical reaction triggers the formation of toxic gadolinium-oxalate nanoparticles inside human cells. These metallic shards can infiltrate organs, including the kidneys and brain, and persist years after a scan, sometimes sparking severe inflammatory responses. In rare cases, this buildup can lead to nephrogenic systemic fibrosis, a painful and potentially fatal disease characterized by the thickening and hardening of the skin and internal organs. While only a small fraction of patients experience adverse side effects, this discovery suggests that a patient's metabolic state and diet could make them vulnerable to toxicity. Experts are now exploring ways to screen patients before scans, and some recommend avoiding high-oxalate foods and vitamin C supplements prior to receiving MRI contrast. source: Henderson, I. M., Benevidez, A. D., Mowry, C. D., Watt, J., Bachand, G. D., Kirk, M. L., Dokładny, K., DeAguero, J., Escobar, G. P., & Wagner, B. Precipitation of gadolinium from magnetic resonance imaging contrast agents may be the Brass tacks of toxicity. Magnetic Resonance Imaging.6h
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