The world is desperate for weight-loss drugs. But Big Pharma can’t advertise them

By Anna Cooban, CNN London (CNN) — The temperature was 92 degrees Fahrenheit. The sweat, profuse. And I was walking toward an exhibition about the “obesity experience” on London’s bustling riverside funded by a $220 billion pharmaceutical company. It was day two of two. In a few hours’ time, the exhibition, designed as a maze,