Details

Autor(en) / Beteiligte

• Newell, Melanie Engstrom
• Babbrah, Ayesha
• Aravindan, Anumitha
• Rathnam, Raj
• Kiernan, Rya
• Driver, Erin M.
• Bowes, Devin A.
• Halden, Rolf U.

Titel

Prevalence rates of neurodegenerative diseases versus human exposures to heavy metals across the United States

Ist Teil von

• The Science of the total environment, 2024-06, Vol.928, p.172260-172260, Article 172260

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2024

Link zum Volltext

Quelle

MEDLINE

Beschreibungen/Notizen

• Novel means are needed to identify individuals and subpopulations susceptible to and afflicted by neurodegenerative diseases (NDDs). This study aimed to utilize geographic distribution of heavy metal sources and sinks to investigate a potential human health risk of developing NDDs. Known or hypothesized environmental factors driving disease prevalence of Alzheimer's Disease (AD), Parkinson's Disease (PD), and amyotrophic lateral sclerosis (ALS) are heavy metals, including arsenic (As), cadmium (Cd), manganese (Mn) and mercury (Hg). Lead (Pb) has been associated with AD and ALS. Analyzable mediums of human exposure to heavy metals (i.e., toxic metals and metalloids), or proxies thereof, include infant blood, topsoil, sewage sludge, and well water. U.S. concentrations of heavy metals in topsoil, sewage sludge, well water, and infant blood were mapped and compared to prevalence rates of major NDDs. Data from federal and state agencies (i.e., CDC, EPA, and the US Geological Survey) on heavy metal concentrations, age distribution, and NDD prevalence rates were geographically represented and statistically analyzed to quantify possible correlations. Aside from an expected significant association between NDD prevalence and age (p < 0.0001), we found significant associations between the prevalence of the sum of three major NDDs with: Pb in topsoil (p = 0.0433); Cd (p < 0.0001) and Pb (p < 0.0001) in sewage sludge; Pb in infant blood (p < 0.0001). Concentrations in sewage sludge of Cd and Pb were significantly correlated with NDD prevalence rates with an odds ratio of 2.91 (2.04, 4.225 95%CI) and 4.084 (3.14, 5.312 95%CI), respectively. The presence of toxic metals in the U.S. environment in multiple matrices, including sewage sludge, was found to be significantly associated with NDD prevalence. This is the first use of sewage sludge as an environmental proxy matrix to infer risk of developing NDDs. [Display omitted] •Neurodegenerative diseases (NDDs) include Alzheimer's, Parkinson's, and ALS•Metal occurrence (As, Cd, Mn, Hg) is associated with prevalence of NDDs•Pb in topsoil, sewage sludge, and blood point to high U.S. NDD prevalence regions•Cd and Pb levels in sewage sludge indicate unfavorable odds ratios for NDDs•Rich data on sewage sludge are identified as a public health information resource