Stuffed Hamster Can I Feed A Hamster Stuff Other Than Hamster Food?

Can I feed a hamster stuff other than hamster food? - stuffed hamster

My hamster loves biscuits, carrots, broccoli and other vegetables. I am sure that vegetables are good, but what about witnesses? She likes wheat crackers.
Do not eat my hamster hamster food I buy. What is wrong with that?
I have not started feeding this material to him immediately. Only after weeks of eating right and go nuts hunger.