Effects of chronic fluorosis on the brain

Area of Science:

• Neuroscience
• Toxicology
• Public Health

Background:

• Chronic fluorosis is a widespread health issue, particularly in developing nations.
• Elevated fluoride exposure is linked to various adverse health outcomes.
• Brain damage from chronic fluorosis represents a significant public health challenge.

Purpose of the Study:

• To review the neurological effects of chronic fluorosis.
• To explore the proposed mechanisms underlying fluoride-induced brain damage.
• To highlight the need for further research into fluoride neurotoxicity.

Main Methods:

• Systematic literature search of PubMed, Medline, and Cochrane databases.
• Inclusion of in vivo, in vitro, and epidemiological studies.
• Analysis of research on fluorosis, brain injury, and pathogenesis.

Main Results:

• Chronic fluorosis is associated with structural and functional brain abnormalities.
• Cognitive deficits including impaired concentration, learning, and memory are observed.
• Mental health symptoms such as anxiety, tension, and depression are linked to fluorosis.

Conclusions:

• Proposed mechanisms include oxidative stress, inflammation, neural apoptosis, and element interactions.
• The precise mechanisms of fluoride neurotoxicity remain incompletely understood.
• Further investigation is crucial for public health strategies, especially in endemic areas.