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Toothpaste widely contaminated with lead and other metals, US research finds
(www.theguardian.com)
News from within the empire - From a leftist perspective
I'm guessing any toothpaste from the US should be avoided at this point, but I wouldn't be surprised if companies outside the US had a similar problem.
Buy domestically branded ones. One of the toothpaste brands in my country cares about manufacturer's employees with disability.