So far this year, Pfizer shares have dropped 17.4% through Friday, while Novo Nordisk's stock has tumbled 24.8% and Lilly shares have slipped 5.1%. The SPDR S&P Pharmaceuticals ETF XPH has shed 12.4% ...

For decades, the medical approach to treating obesity in children was the wait-and-see approach. But a new Canadian guideline ...