Let us not forget the current asserted risk of kale being an accumulator of thallium - hence panic (however: http://m.snopes.com/kale-not-safe/ http://m.snopes.

Let us not forget the current asserted risk of kale being an accumulator of thallium - hence panic (however: http://m.snopes.com/kale-not-safe/ http://m.snopes.com/kale-not-safe/ ) Wait long enough and every substance we eat will be associated with a study which calls it into question. Then, if chance associates that study with a "slow news day", a relative panic will ensue. As a crusty old medicinal chemist, i offer the best rule of thumb (circa 16th century): [no matter what source it is] the dose makes the poison.