The media constantly bombards us with studies purporting to show new evidence about medicines we should avoid, or foods we should eat, or behaviors that either protect us or harm us. Many of these studies, because of their design, actually tell us absolutely nothing. Nevertheless, the media is not in the business of downplaying the news, so the studies are inevitably announced in the mainstream press with much fanfare and little scientific scrutiny. So that leaves us, the consumers of the news ...