Prolonged exposure to low levels of the heavy metal cadmium may fuel the growth of some breast cancer cells and encourage them to spread, preliminary research indicates.
Found in many farm fertilizers, cadmium can make its way into soil and water. Some other main sources of cadmium include cigarette smoke, rechargeable batteries, certain cosmetics, bread and other cereals, potatoes, root crops and vegetables. Once it enters the body, cadmium may mimic the effects of the female hormone estrogen.
Unlike previous research, this new analysis looks at lifetime exposure to cadmium, not acute bursts of high levels of the heavy metal.
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