Little is known about the influence of environmental factors on the etiology of childhood brain tumors. Researchers examined risks for brain tumors in children after prenatal and infant exposure to monitored ambient air toxics.
In Bangladesh, millions of people are exposed to arsenic in drinking water ; arsenic is associated with increased risk of cancer. Once ingested, arsenic is metabolized via methylation and excreted in urine. Knowledge about nutritional factors affecting individual variation in methylation is limited.
