The WHO, after assessing new evidence of toxicity, warned that «prolonged exposure» to lead may cause «serious neurological damage, especially among infants, children and pregnant women». (newscientist.com)
It claimed in 2010 to have found evidence of toxicity in tests by the GM - crops giant Monsanto of its own Roundup - resistant maize. (newscientist.com)
In fact, doctors routinely inject people with deficiency symptoms with very large doses of the vitamin — 500 times the daily required intake or more — without evidence of toxicity. (whfoods.org)