Im not the first to point out that the study design has some issues, and in any case proving there isnt a difference is hard (this only shows that they failed to find a difference between drugs and dieting).

FORBES: What If Dieting Merely Lets Diabetics Take Fewer Medicines?

"One study shows the cost of adapting a single watershed in China - that's one of the few case studies that's been done - comes in at a billion dollars a year, " he said.

BBC: Climate protection 'to cost more'