Probably physical activity and a healthy diet, both of which they've been advocating for for decades. This is an odd comment.
So they should double down on the thing they've been advocating for decades as the obesity epidemic has exploded, and not look at the only options that have proven effective. That seems like an odd recommendation.
Not really, plenty of people have "discovered" that proper food intake and exercise actually works. Very few follow through long term and they are looking for a pharma answer, which is profitable so sure they are willing to fill that want.
The term diet I'm avoiding here itself is viewed as a temporary change these days, but it must be a permanent change to actually work.