@Ragepanda used a servitor for this. They had success but as sometimes happens when we don’t know the cause of an issue, they found it also successfully masked a medical issue that was causing them to gain the weight in the first place.
So yes it’s possible, but it’s another one of those things to be careful with also, just in case there is an underlying reason that should be considered first.
For example if Panda had realized it was their thyroid, or whatever the exact issue was, they could have tasked the servitor for healing, during the time that the problem was worsening. But they didn’t know, so they were trying to solve the wrong problem.
They may have ended up needing medical care either way, but they may not have if they’d known. They are an experienced healer, so they may very well have been able to intervene on their own behalf.
Spirits are also really good for helping you to develop the habits needed to maintain a healthy weight- that doesn’t mean they’d lead you to a diet or exercise necessarily, but they might if that was the best way to get your result, so while this is something I feel Marbas is likely willing to help you with, they may also guide you rather than do it completely for you.
I’ve had a lot of results come about by me suddenly realizing what I had to do to for the problem, or being directed to look at a particularly thing and finding exactly what I needed, so I do sometimes wonder if we miss results simply because we didn’t realize the answer was put in front of us, but we expected it to be completed for us.
Like I don’t ever expect to receive the tools I need when I make a request or do a ritual. I expect to see the result, but often I find I’m given the tools then the result is easy peasy lemon squeeze to obtain- the rest of the way on my own.
If that makes any kind of early morning sense! 