Weight Watchers figured it out and so did "The Biggest Loser." Dieting and exercise to lose weight is more effective when done with support. Real research has proven the same thing, and weight-loss drugmakers have taken that to heart in marketing their treatments. But according to a recent Journal of Public Policy & Marketing article, lifestyle support isn't enough. Drugmakers may want to look to their advertising pitches, too. More from FiercePharmaMarketing