Muddled Message About Vaping Causes Costly Confusion

When there's an outbreak of food poisoning, the federal government does not issue general advisories about the hazards of eating. It tells people which products have been implicated so they can adjust their behavior to reduce the risks they face.

Yet for months now, even as evidence mounted that vaping-related lung diseases overwhelmingly involved black-market cannabis products, state and federal officials have been vaguely and unhelpfully warning us about the hazards of "vaping" and "e-cigarettes." That approach has endangered public health by failing to give cannabis consumers a clear heads-up...