I stopped reading after this sentence:

"One kale sample reported thallium at 1.14 ppm, nickel at 20 ppm, and aluminum at 120 ppm. (As has been widely reported, aluminum is often suspected as a cause of both autism and Alzheimer’s disease.)"

It's pretty controversial claim that aluminum is related to Alzheimer's disease http://www.webmd.com/alzheimers/guide/controversial-claims-r...