How can arsenic affect health?
The health effects of arsenic depend on its chemical form, how much is consumed, and for how long. A one-time oral dose of 70,000 to 180,000 micrograms of inorganic arsenic is fatal for most people. Although this amount is still quite small, about the weight of a few grains of rice, it is very large compared to the small amounts naturally present in water, soil, food, or air. These small amounts, however, may still cause harm if exposure to them occurs over many years. Go to > top.
