I think the consequences will show over the long term. I don't think people get unhealthy because they're overweight. I think they get overweight because they're unhealthy.

Meaning, you can take away the symptom. But you're not fixing the root cause (i think we agree on that).

What the exact outcomes will be I can't tell... But when you take a shitty diet that still contains too few nutrients, and then give people something so that they eat less of it, but still the same crap food. You end up with someone more malnourished than they already were, further amplifying the shortage of necessary nutrients.

I'm sure they'll sell another pill for issues arising from that cycle.

To the last part of your question, I see rumors people struggle with severe gut issues (indigestion) and depressive/suicidal ideation within months after taking it. It's hard to quantify this stuff as truthful sources of this kind of data are scarce unfortunately.