Does removin the hamster wheel cause the hamster to gain weight?

Probably not, she's probably just hyperactive. You might try it but I tried that once and it didn't work for my rats. Just keep her on full food and give her treats and she'll fatten up when she's ready too.

No, they need the wheel for good health and mental stimulation. I agree, your poor poor hamster. Your hamster may have a disease or internal parasite, worms aren't uncommon and cause weight loss. You need to take her in to a vet for a look over and also re-examine the diet you're giving her, the vet may give you some supplements in addition to whatever medication is needed. There's no reason for a hamster to be thin, obviously having a wheel doesn't cause it because they all have wheels, there's something wrong and you need to look into the cause.

If I were you I would just feed her more fatty foods and hamsters are supposed to be skinny check out this video I hope this helps. http://www.youtube.com/watch?v=kUN2BCej-gI

No, they need the wheel for good health and mental stimulation. I agree, your poor poor hamster. Your hamster may have a disease or internal parasite, worms aren't uncommon and cause weight loss. You need to take her in to a vet for a look over and also re-examine the diet you're giving her, the vet may give you some supplements in addition to whatever medication is needed. There's no reason for a hamster to be thin, obviously having a wheel doesn't cause it because they all have wheels, there's something wrong and you need to look into the cause.

If I were you I would just feed her more fatty foods and hamsters are supposed to be skinny check out this video I hope this helps. http://www.youtube.com/watch?v=kUN2BCej-gI