Is the FDA intervention good or bad?<p>At first glance, it seems like the answer is yes because the FDA action signals that outrageous, unprovable claims do not give offer a competitive advantage.  But by making FDA “experts” the sole arbiter of truth, ideas outside the mainstream are harder to pursue. Some people probably really did benefit from the Luminosity, but now it’s much harder to figure out why. Note that the FDA also makes it harder on people like Consumer Reports, Cochrane Reviews, etc. who get fewer donations and customers because much of what they could be doing competes with the FDA’s government-subsidized service.