Which heavy metal toxin has a strong tendency to be stored in the brain?

Mercury is known for its strong tendency to accumulate in the brain, leading to neurotoxic effects, particularly in long-term exposure scenarios. It can cross the blood-brain barrier, where it can interfere with various neurological functions. This is particularly relevant with methylmercury, an organic form of mercury that is highly toxic to the central nervous system. The ingestion or inhalation of mercury can lead to serious health problems, including cognitive impairment and motor dysfunction, highlighting its significant impact on brain health.

Other heavy metals, while toxic and harmful to health, do not exhibit the same affinity for brain tissue as mercury. Lead, for example, is known for its neurotoxic effects but tends to accumulate in bone and soft tissues more than in the brain. Arsenic can affect neurological health, but its toxicity is not specifically associated with brain accumulation to the same extent. Copper, essential in trace amounts, can lead to toxicity if accumulated, but this typically manifests in other organs and tissues rather than a specific predilection for the brain.