Nikhil Prasad Fact checked by:Thailand Medical News Team Apr 10, 2026 2 hours, 20 minutes ago
Thailand Medical: A new study conducted by Thai researchers is bringing fresh attention to a hidden biological factor that may be quietly driving early memory problems - an imbalance in a specific form of copper found in the blood. The research focuses on non-ceruloplasmin-bound copper (NCC), a reactive type of copper that may play a key role in mild cognitive impairment (MCI), a condition often seen as an early stage of dementia.
Imbalanced reactive copper in blood may quietly drive early memory loss
Copper’s Hidden Risk in the Body
Copper is an essential mineral that helps the brain function properly. It supports energy production and protects nerve cells from damage. However, not all copper in the body is beneficial.
Most copper is safely bound to a protein called ceruloplasmin. This form is stable and helps prevent harmful reactions. But a smaller portion, known as NCC, is chemically active and can trigger oxidative stress, inflammation, and cellular damage when levels rise.
Study Design and Institutions Involved
The study included 300 individuals aged between 55 and 80 years. Among them, 184 participants had mild cognitive impairment, while 116 had normal cognitive function.
This
Thailand Medical research was carried out by scientists from the Faculty of Medicine Ramathibodi Hospital, Mahidol University; the Institute of Nutrition, Mahidol University; the Division of Neurology at Ramathibodi Hospital; and the National Center for Genetic Engineering and Biotechnology (BIOTEC), under the National Science and Technology Development Agency. Additional collaboration involved Chulabhorn Hospital and King Chulalongkorn Memorial Hospital in Bangkok.
Key Findings Reveal a Critical Difference
The study found that individuals with mild cognitive impairment had significantly higher levels of NCC compared to those with normal cognition. Importantly, total copper levels were not significantly different between the two groups.
This indicates that it is not the overall amount of copper that matters, but rather the form in which it exists in the body.
Higher NCC levels were also linked to changes in several important proteins involved in inflammation, fat metabolism, and blood vessel function. These included transthyretin, transferrin, and apolipoprotein A-I, suggesting that copper imbalance may trigger broader biological disruptions.
This Medical News report highlights that these protein changes form interconnected pathways that may contribute to brain damage over time through oxidative stress and chronic inflammation.
Disrupted Biological Pathways
The researchers identified more than 1,700 proteins in total, revealing clear differences between individuals with and without cognitive impairment.
In those with MCI, key biological pathways related to immune response, lipid metabolism, and blood cl
otting were significantly altered. These findings suggest that copper imbalance may contribute to cognitive decline indirectly by affecting multiple systems in the body, including inflammation and vascular health.
A Step Toward Easier Detection
One of the most promising outcomes of the study is the potential use of NCC as a blood-based biomarker for early cognitive decline.
Current diagnostic methods for conditions like Alzheimer’s disease often rely on expensive imaging or invasive procedures. Measuring NCC levels in blood could provide a simpler and more accessible way to identify individuals at risk.
Although NCC alone is not a perfect diagnostic tool, it showed better predictive ability than several other biomarkers tested in the study.
Conclusion
The findings of this study provide strong evidence that imbalance in non-ceruloplasmin-bound copper plays a meaningful role in early cognitive decline. Elevated NCC levels appear to drive oxidative stress, inflammation, and vascular dysfunction, all of which are known contributors to neurodegeneration. While further long-term research is needed to confirm these relationships, the results suggest that monitoring copper balance could become an important strategy for early detection and possible prevention of dementia. These insights also open the door to future therapies aimed at regulating copper metabolism to protect brain health.
The study findings were published in the peer reviewed journal: Nutrients.
https://www.mdpi.com/2072-6643/18/8/1171
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