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Circulating bio-elements and their association with cognitive impairment.

Masroor Anwar1, Javed A Qadri2, Mohd Suhail Ashar1

  • 1Department of Biophysics, All India Institute of Medical Sciences, New Delhi, India.

Journal of Trace Elements in Medicine and Biology : Organ of the Society for Minerals and Trace Elements (GMS)
|February 6, 2026
PubMed
Summary

Environmental pollution has increased bio-element levels in Indian cognitively impaired (CI) patients. Eight elements, including lithium (Li) and aluminum (Al), were significantly elevated in CI individuals, suggesting a potential link to neurotoxicity and early disease detection.

Keywords:
Alzheimer’s diseaseBio-elementsCognitive impairmentICP-MSNeurodegenerationNeurotoxicity

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Area of Science:

  • Environmental Science and Toxicology
  • Neuroscience and Neurology
  • Analytical Chemistry

Background:

  • Rapid industrialization and urbanization in India have led to increased environmental pollution of bio-elements.
  • Imbalances in blood bio-element concentrations can disrupt homeostasis and cause neurodegenerative effects.
  • Limited data exists on the association between bio-elements and cognitive decline.

Purpose of the Study:

  • To perform quantitative profiling of circulatory bio-elements in cognitively impaired (CI) patients.
  • To investigate the association between specific bio-element concentrations and cognitive impairment.

Main Methods:

  • Quantification of 19 elements in 65 participants using inductively coupled plasma mass spectrometry (ICP-MS).
  • Comprehensive clinical and functional assessments were conducted to evaluate cognitive abilities.
  • Comparison of bio-element levels between CI patients and control groups.

Main Results:

  • Significant increases in eight elements (Li, Al, V, Mn, Co, Ni, Zn, Ag) were observed in CI patients compared to controls.
  • Cognitively impaired patients had a significantly lower Mini-Mental State Examination (MMSE) score (13.77 ± 0.99) than controls (27.78 ± 0.36).
  • Elevated concentrations of Li, Al, V, Mn, Co, Ni, Zn, and Ag were quantified in CI patients.

Conclusions:

  • The studied bio-elements (Li, Al, V, Mn, Co, Ni, Zn, Ag) may form a distinctive signature in CI patients.
  • Detection of these bio-element signatures in the elderly could aid in the early management of element-induced neurotoxicity.
  • This research highlights a potential biomarker for early identification and intervention in cognitive decline.