Arsenic round the world: a review.

Area of Science:

• Environmental Science
• Toxicology
• Public Health

Background:

• Arsenic is a naturally occurring metalloid, abundant in the Earth's crust and present in over 245 minerals.
• Arsenic compounds are mobile in the environment, with rock weathering facilitating their entry into the arsenic cycle via dust and water.
• Groundwater contamination by arsenic is a significant global health concern, impacting both human and animal life through the food chain.

Purpose of the Study:

• To review the environmental origins, occurrence, and human health impacts of arsenic.
• To highlight the widespread threat of arsenic contamination in groundwater and food.
• To emphasize the need for further research on arsenic risk assessment.

Main Methods:

• This is a review article, synthesizing existing research on arsenic.
• Information was gathered on arsenic's environmental behavior, natural occurrence, and toxicological effects.
• The review examines arsenic's presence in various food sources and its inorganic/organic forms.

Main Results:

• Arsenic contamination is widespread globally, primarily through natural groundwater sources and industrial activities.
• Humans are exposed to arsenic via air, food, and water, leading to diverse health issues.
• Food items like rice and vegetables may contain high levels of inorganic arsenic, necessitating further standardization studies.

Conclusions:

• Arsenic exposure causes a wide range of adverse health effects, including dermal, cardiovascular, neurological, and carcinogenic impacts.
• Urgent research is needed to improve arsenic risk assessment, especially at low exposure levels.
• Understanding arsenic's environmental pathways and toxicological profile is critical for public health protection.