At a family wedding earlier this month, an uncle was salivating over the prospect that the Vivus Inc. drug Qnexa could soon become the first in a new generation of obesity drugs to gain FDA approval. He needed to lose 50 pounds, he confided, and the drug seemed the answer to his prayers. Since we’ve written extensively about obesity and these drugs in BioWorld Today, he wanted my opinion. I politely inquired whether he had considered dieting and exercise, which could produce similar results without the potential side effects of a prescribed drug – especially one in a category that’s...